We’ve all been there – staring at that single, lonely wall socket in a compact apartment kitchen corner, surrounded by a tangle of cords for the coffee maker, phone charger, and smart speaker. In today’s world packed with essential electronics, the humble wall outlet often feels like a relic from a simpler time, especially when square footage is at a premium. For renters, tiny home dwellers, or anyone navigating minimalist living, the frustration of insufficient power access clashes directly with the need to keep multiple devices charged and running smoothly. It’s not just about convenience; it’s about making your limited space function intelligently without resorting to dangerous daisy-chaining or unsightly, bulky power strips that dominate precious counter or desk real estate.
The quest for the perfect space-saving power solution has evolved significantly, moving far beyond basic plug extenders. Modern life demands seamless integration of traditional plug-in devices alongside our ever-growing fleet of USB-powered gadgets – from smartphones and tablets to smart home hubs and wireless earbuds. Finding an outlet expander that thoughtfully incorporates USB ports without becoming a cumbersome eyesore is crucial for maintaining both functionality and aesthetic harmony in tight quarters. This guide cuts through the noise, focusing squarely on the features and considerations that truly matter when selecting a compact, USB-equipped outlet expander designed to thrive where space is non-negotiable. Forget generic lists; let’s dive into what makes these unassuming devices indispensable allies in small-space living.
Top 10 Outlet Expanders with USB
Detailed Product Reviews
1. Surge Protector Outlet Extender - with Rotating Plug, 6 AC Multi Plug Outlet with 4 USB Ports (2 USB C), 1800J Wall Charger, 3-Sided Power Strip with Spaced Outlet Splitter for Home, Office, Travel
Overview: This versatile 10-in-1 surge protector combines 6 widely spaced AC outlets, 4 USB ports (including dual USB-C), and 1800J surge protection in a compact, rotating design. Ideal for homes, offices, or travel, it addresses outlet congestion while prioritizing safety with ETL certification and robust circuitry.
What Makes It Stand Out: The 180-degree rotating plug adapts to awkward wall sockets, and the 3-sided outlet layout prevents adjacent plug interference. Its triple-layer surge protection (TVS, MOV, GDT) responds in under 1ns—faster than standard MOV-only units—and the dual USB-C ports support high-speed 5V/3A charging via smart IC detection.
Value for Money: Priced competitively, it outperforms basic power strips with superior joule rating (1800J vs. typical 1000J), wider outlet spacing, and double USB-C ports. The inclusion of travel-friendly compactness and ETL safety certification justifies a slight premium over minimalist alternatives.
Strengths and Weaknesses: Strengths: Exceptional surge response time; rotating plug versatility; non-blocking 3-sided outlets; dual USB-C support. Weaknesses: USB-C lacks QC 3.0 (limited to 5V); max 1875W load requires careful device management; indicator light only confirms grounding, not surge status.
Bottom Line: A top-tier choice for tech-heavy spaces needing reliable surge defense and flexible charging. Recommended for users prioritizing safety and multi-device compatibility, despite minor USB-C limitations.
2. One Beat 1680J 3 Side Power Strip Multi Plug Expander, Surge Protector, 5 Outlets Extender, 4 USB Ports (USB C), Wall Mount Charger, Outlet Splitter Adapter for Home, Travel, Office, ETL Listed, White
Overview: This 9-in-1 ETL-listed extender offers 5 spaced AC outlets, 4 USB ports (including dual USB-C), and 1680J surge protection. Its wall-mount screw and plastic prong ensure stability, making it suitable for home, office, or travel use where outlet access is limited.
What Makes It Stand Out: The 1.78-inch outlet spacing exceeds standard designs, eliminating plug blockage, while the secure wall-mount system prevents accidental dislodging. Smart USB ports auto-detect devices for optimal 5V/2.4A (USB-A) or 5V/3A (USB-C) charging, though USB-C lacks higher-voltage support.
Value for Money: Affordable for its feature set, it matches pricier models with ETL safety, decent surge capacity (1680J), and thoughtful spacing. The included 12-month warranty and responsive customer service enhance its cost-effectiveness versus no-name brands.
Strengths and Weaknesses: Strengths: Secure wall attachment; above-average outlet spacing; reliable ETL certification; strong warranty. Weaknesses: Lower joule rating than competitors (1680J vs. 1800J); USB-C not QC 3.0 (max 5V); indicator light only shows surge protection status, not faults.
Bottom Line: An excellent budget-friendly option for stable, spaced-out charging. Best for users needing wall security and basic surge protection, though power-heavy setups may prefer higher joule ratings.
3. Wall Charger, Surge Protector, QINLIANF 5 Outlet Extender with 4 USB Charging Ports, 3-Sided 1680J Power Strip Multi Plug Adapter Spaced for Home Travel Office
Overview: This 9-in-1 duplex-secured extender features 5 widely spaced outlets (2.1 inches apart), 4 USB ports (dual USB-C), and 1680J surge protection. Its groove-back design ensures flush wall mounting, but it’s exclusive to standard duplex outlets.
What Makes It Stand Out: The industry-leading 2.1-inch outlet spacing accommodates bulky adapters effortlessly, and the rear groove guarantees seamless wall alignment. Triple-layer surge circuitry (TVS/MOV/GDT) provides rapid response, while smart USB ports deliver up to 5V/3A to USB-C devices.
Value for Money: Competitively priced for its exceptional spacing and secure mounting, though the 1680J rating lags behind premium models. The 12-month warranty and ETL certification offer peace of mind, making it a solid mid-range investment for outlet-congested spaces.
Strengths and Weaknesses: Strengths: Unmatched outlet spacing; secure wall attachment; effective multi-circuit surge protection; groove-back flush fit. Weaknesses: USB-C limited to 5V (no QC 3.0); incompatible with GFCI/outlets spaced <1 inch; only 5 AC outlets vs. competitors’ 6.
Bottom Line: Highly recommended for users battling plug blockage, especially in tight spaces. Avoid if you need GFCI compatibility or higher surge capacity, but ideal for standard duplex outlets.
4. Wall Outlet Extender with Surge Protector, 6 AC Outlets, Shelf, 2 USB & USB C Charging Ports - Home & Dorm Plug Expander
Overview: Combining 6 AC outlets, 3 USB ports (1 USB-C), and a removable shelf, this extender prioritizes organization. It includes basic 490J surge protection but lacks advanced safety features of higher-end models, targeting dorms or minimalist setups.
What Makes It Stand Out: The integrated shelf is a unique perk for holding small items like toothbrushes or razors, freeing counter space. SmartIQ USB ports deliver up to 5V/2.4A per port, and the plug-and-play design ensures effortless installation on standard outlets.
Value for Money: Budget-friendly for its shelf utility, but the low 490J surge rating is a significant drawback—well below the recommended 1000J+ for valuable electronics. Better suited for low-risk environments than as primary protection for expensive devices.
Strengths and Weaknesses: Strengths: Practical shelf design; easy installation; compact footprint; adequate USB charging. Weaknesses: Critically low surge protection (490J); no wall-mount stability; limited safety certifications beyond basic overload protection; shelf reduces outlet accessibility.
Bottom Line: Only consider if shelf functionality outweighs surge needs—e.g., for bathroom essentials. Not recommended for computers or high-value electronics due to inadequate joule rating.
5. Outlet Extender with Rotating Plug, Mifaso Surge Protector 6 AC Multi Plug Wall Outlets and 3 USB Ports, 1800 Joules, 3-Sided Swivel Power Strip Spaced Splitter for Home, Travel, Dorm Room Essentials
Overview: This 9-in-1 swivel extender delivers 6 spaced AC outlets, 3 USB ports (1 USB-C), and 1800J surge protection in a travel-friendly 5.7-inch form. Its rotating plug and ETL certification target mobile users seeking reliable, adaptable power in compact spaces.
What Makes It Stand Out: The 180-degree rotating plug conquers awkward wall sockets, while the 3-sided outlet design prevents crowding. Triple-circuit surge protection (TVS/MOV/GDT) absorbs spikes in <1ns, and smart USB ports optimize charging up to 5V/3A for USB-C devices.
Value for Money: Priced mid-range, it competes strongly with Product 1 but offers fewer USB ports (3 vs. 4). The 1800J rating and portability justify the cost for travelers, though the single USB-C may disappoint users with multiple modern devices.
Strengths and Weaknesses: Strengths: Excellent portability; responsive surge defense; non-blocking outlets; durable 1382℉-rated housing. Weaknesses: Only one USB-C port; USB-C lacks QC 3.0; no wall-mount stability; lower USB port count than rivals.
Bottom Line: A superb travel companion for surge-sensitive charging, but home users with multiple USB-C devices should opt for models with dual USB-C ports. Highly recommended for dorms or frequent movers.
6. 5 Outlet Extender Multi Plug Wall Outlets with 4 USB Charging Ports (1 USB C Outlet), 3 Sided 1680J Surge Protector Power Strip USB Wall Charger for Home, Office, Travel, ETL Listed, White
Overview: This compact wall-mounted extender transforms a single duplex outlet into 5 AC outlets plus 4 USB ports (including 1 USB-C), featuring 1680J surge protection. Ideal for spaces like dorms or bedside tables, it eliminates cable clutter with its direct-plug design and includes safety certifications like ETL listing.
What Makes It Stand Out: The triple-layer surge protection (TVS, MOV, GDT) and 1382℉ fire-resistant casing exceed basic safety standards. The “Protected” indicator light offers peace of mind, while the 3-sided layout accommodates bulky plugs without blocking ports. USB-C charging at 3A MAX also stands out for faster device charging.
Value for Money: Priced competitively for its 1680J rating and premium safety tech, it outperforms budget models with weaker protection. The 12-month warranty and 30-day return policy enhance its reliability, making it a smart long-term investment for home/office use compared to lower-joule alternatives.
Strengths and Weaknesses: Strengths: Robust 1680J surge protection; space-saving wall-mount design; versatile USB-C support; clear protection indicator. Weaknesses: Shared 4.2A USB output may slow charging with multiple devices; no night light or rotating plug; fixed orientation limits placement flexibility.
Bottom Line: A top-tier choice for safety-focused users needing reliable surge protection and USB versatility. Its premium build and ETL certification justify the price, especially for critical electronics in homes or offices. Highly recommended for permanent installations.
7. JcBlaon Outlet Extender Surge Protector - 6 Outlet Splitter with 4 USB Ports (2 USB C), Multiple Plug Expander Wall Charger, 3 Sided Multi Plug Wall Adapter Power Strip for Home Office Kitchen Travel
Overview: This 10-in-1 extender provides 6 AC outlets and 4 USB ports (2 USB-A, 2 USB-C) with 1050J surge protection. Designed for tight spaces, it features wide 2.15-inch outlet spacing, wall-mount capability, and compatibility with home, office, or travel setups. ETL certification ensures basic safety compliance.
What Makes It Stand Out: The generous 2.15-inch outlet spacing prevents bulky adapters from blocking adjacent ports—a rarity in compact designs. The 18-month warranty exceeds industry standards, and the dual USB-C ports cater to modern devices, though limited to 5V/2.4A (excluding high-voltage PD charging).
Value for Money: Excellent for budget-conscious buyers needing extra outlets without premium surge protection. The 1050J rating suits basic electronics, and the 18-month warranty adds value. However, it’s less ideal for high-end gear compared to 1680J models costing slightly more.
Strengths and Weaknesses: Strengths: Spacious outlet layout; long 18-month warranty; dual USB-C ports; compact travel-friendly size. Weaknesses: Lower 1050J surge protection; USB-C lacks PD support for laptops; plastic prong may require trimming for some outlets; no status indicator light.
Bottom Line: A practical, affordable solution for everyday use where outlet spacing is critical. Best for students or travelers prioritizing port availability over advanced surge protection. Skip if you need PD charging or robust joule ratings.
8. One Beat 2 Pack Multi Plug Outlet Splitter with USB,Surge Protector Outlet Extender with 3 Wall Outlets 4 USB Wall Charger(2 USB C),490 J, ETL Listed,Small Outlet Adapter Plug Extender for Travel,WH
Overview: This budget-friendly 2-pack offers 3 AC outlets and 4 USB ports (including 2 USB-C) per unit, with 490J surge protection. Its ultra-compact design includes a phone holder ledge and ETL/FCC certifications, targeting travelers and dorm users needing portability and basic safety.
What Makes It Stand Out: The built-in phone holder—uncommon in competitors—lets you prop devices while charging. Dual USB-C ports (5V/3A) and a 90-day refund policy provide added convenience. The small size (ideal for luggage) and dual-pack value make it a travel standout.
Value for Money: Exceptional for the price, especially as a 2-pack. The 490J surge protection is entry-level but sufficient for phones/tablets, and the 90-day guarantee reduces purchase risk. Competes well against single units with similar specs at higher costs.
Strengths and Weaknesses: Strengths: Phone holder design; dual USB-C ports; 2-pack value; travel-portable size; 90-day refund. Weaknesses: Low 490J surge rating (unsuitable for expensive electronics); shared 15.5W USB output; no outlet spacing for large plugs; minimal protection for high-wattage devices.
Bottom Line: A solid travel companion for casual users, but not for high-value gear. Prioritize it for hotel rooms or dorms where space and phone charging matter most. Avoid for desktop setups needing robust surge defense.
9. POWRUI Multi Plug 6 Outlet Surge Protector Extender with 3 USB Ports (1 USB C) and Night Light, 3-Sided Power Strip with Adapter Spaced Outlets, ETL Listed, White
Overview: This feature-rich extender delivers 6 AC outlets, 3 USB ports (1 USB-C), and an auto-sensing night light in a 3-sided design. Backed by 1680J surge protection and ETL certification, it targets bedrooms or hallways where ambiance and outlet density matter equally.
What Makes It Stand Out: The dusk-to-dawn night light with adjustable brightness is unique, offering soft illumination for safety. Its 2.1-inch outlet spacing prevents plug crowding, and the triple-layer surge circuit (TVS/MOV/GDT) matches premium safety standards at a mid-range price.
Value for Money: Justifies its cost with the night light utility and 1680J protection—features rarely bundled affordably. The 12-month warranty and ETL listing add trust, outperforming basic extenders. Ideal for bedrooms where competing models lack ambient lighting.
Strengths and Weaknesses: Strengths: Versatile night light; spacious outlets; robust 1680J surge defense; 3-sided accessibility; USB-C support. Weaknesses: USB-C lacks PD charging (max 5V); night light can’t be disabled permanently; bulkier than minimalist designs; single USB-C port limits modern setups.
Bottom Line: The best pick for bedroom or nursery use thanks to its thoughtful night light and safety. Choose it over rivals if ambient lighting is a priority, but opt for Product 6 for pure surge protection in offices.
10. TROND Multi Plug Outlet Extender with 360 Rotating Plug, 3 AC Outlet Splitter with 2 PD 20W USB C Charger, USB Wall Socket Adapter, A Small Charging Station for Kitchen Bathroom Cruise Essentials
Overview: This cordless, cruise-approved extender offers 3 AC outlets and 4 USB ports (2 USB-C with 20W PD) via a 360° rotating plug. Designed for travel, it fits tight spaces behind furniture and complies with cruise ship regulations—no surge protection, prioritizing portability.
What Makes It Stand Out: The 360° rotating plug ensures compatibility with awkwardly placed outlets, while dual 20W USB-C PD ports enable fast laptop charging. Cruise compliance (Carnival, Disney, etc.) is a niche differentiator, and its compact size (3.07") suits luggage constraints.
Value for Money: Worthwhile for frequent travelers or cruisers needing PD charging in confined spaces. The lack of surge protection lowers the price, but it’s a deliberate trade-off for cruise safety rules. Outperforms non-rotating travel adapters but avoid for home use.
Strengths and Weaknesses: Strengths: 360° rotation for tight spots; 20W USB-C PD charging; cruise-ship approved; ultra-portable; 4-device USB support. Weaknesses: Zero surge protection (risky for home); limited to 1875W load; USB-C voltage restrictions; not ETL-certified for permanent use.
Bottom Line: An essential travel tool for cruisers or business trips, but never for home electronics. Its rotating design and PD charging solve specific mobility pain points—just confirm your ship’s outlet specs first.
Understanding the Unique Challenges of Power in Compact Areas
Living with limited space throws unique curveballs when it comes to managing power access. Standard solutions often fail spectacularly in these environments, creating more problems than they solve. Recognizing these specific hurdles is the first step toward finding a truly effective outlet expander.
The Tyranny of Proximity
In cramped spaces, every millimeter counts. Standard outlet expanders frequently project too far from the wall, making it impossible to push furniture flush against it or causing the unit itself to protrude awkwardly into walkways. This “wall bump” becomes a major nuisance, snagging clothes or simply looking out of place in a carefully curated minimalist setup. The ideal solution minimizes this protrusion significantly.
Furniture and Fixture Conflicts
Countertops, desks, nightstands, and entertainment units are often positioned right up against walls. A bulky expander can prevent cabinets from closing fully, block drawer slides, or interfere with the placement of essential appliances like under-cabinet lighting or compact refrigerators. The design must accommodate these real-world spatial constraints without forcing compromises in furniture arrangement.
Visual Clutter Amplification
Small spaces magnify visual noise. A large, ungainly expander with multiple dangling cords becomes a focal point of disorganization, undermining efforts to create a calm, uncluttered environment. The aesthetic integration of the expander – its color, shape, and how neatly it manages cords – is just as important as its functionality in these settings.
Essential Features for Space-Saving USB Outlet Expanders
Not all outlet expanders with USB are created equal, especially when space is the primary concern. Prioritizing the right features ensures you get a solution that genuinely enhances your small-space functionality without adding frustration.
Ultra-Compact Form Factor Metrics
Look beyond just “small.” Measure the unit’s depth (how far it sticks out from the wall), width (span across the outlet cover plate), and height. The absolute best options for tight spots often feature depths under 1.5 inches and widths designed to stay neatly within the footprint of a standard outlet cover. Units that sit almost flush are game-changers.
Strategic Port Placement and Spacing
Cramming ports together defeats the purpose if you can’t actually plug in two standard wall warts side-by-side. Optimal spacing between AC outlets (at least 1 inch center-to-center) and thoughtful positioning of USB ports (angled or offset) prevent bulky adapters from blocking adjacent receptacles. Look for designs that specifically address “wall-wart” compatibility.
Right-Angle Plug Design Necessity
This is often the secret weapon for small spaces. A plug that enters the wall outlet at a 90-degree angle instead of straight out dramatically reduces the unit’s projection into the room. This simple design feature can be the difference between the expander fitting neatly behind a sofa or desk and becoming a constant obstruction.
USB Port Type and Power Delivery Considerations
Don’t assume all USB ports are equal. Understanding the difference between basic USB-A (older standard, slower charging) and modern USB-C with Power Delivery (PD) or Qualcomm Quick Charge (QC) is vital. PD (often 18W, 30W, or higher) enables significantly faster charging for compatible laptops, tablets, and phones. Prioritize units offering at least one higher-wattage USB-C PD port for future-proofing.
Rotating Outlet Modules for Flexibility
Some advanced expanders feature individual outlet modules that rotate independently. This seemingly small feature provides incredible flexibility, allowing you to orient bulky plugs in different directions to maximize space and prevent them from interfering with each other or nearby furniture.
Integrated Cord Management Solutions
Even compact expanders can have a short power cord that creates a small mess. Built-in cord wraps, clips, or channels help keep this cord tidy and prevent it from dangling or getting tangled, contributing to a cleaner overall look essential in minimalistic spaces.
Safety and Reliability: Non-Negotiables for Any Power Solution
In the quest for compactness, safety must never be compromised. Cheap, poorly designed expanders pose serious fire and shock hazards, risks amplified when they might be hidden behind furniture or under pressure in tight spots.
Certification Verification is Mandatory
Always, without exception, look for independent safety certifications prominently displayed on the product and packaging. In North America, UL (Underwriters Laboratories) certification is the gold standard. ETL (Intertek) is also widely accepted. Avoid any unit lacking these clear, legitimate marks – counterfeits are common in this category.
Adequate Wattage and Amperage Handling
Check the unit’s maximum load rating (usually in Watts or Amps). Ensure it comfortably exceeds the combined wattage of all devices you plan to plug in simultaneously. Overloading a compact expander is a major fire risk. Most household circuits are 15A; a safe expander should handle at least 12A (1440W at 120V) continuously.
Surge Protection: Worth the Slight Bulk
While pure surge protectors are larger, many quality compact expanders now incorporate basic surge suppression. This is crucial for protecting sensitive electronics from minor voltage spikes. Verify the Joule rating (higher is generally better for surge absorption capacity, though compact units will have lower ratings than full strips). Don’t confuse this with full MOV-based protection in large strips, but it’s better than nothing.
Overload Protection Mechanisms
Look for units featuring an automatic resettable circuit breaker. This critical safety feature cuts power if the expander is overloaded, preventing overheating. It should trip before the main circuit breaker in your home panel does, adding a vital layer of localized protection. A simple on/off switch isn’t sufficient overload protection.
Build Quality and Heat Dissipation
Feel the unit (if possible) or read reviews regarding heat. High-quality plastics that don’t feel flimsy and designs that allow some airflow around internal components help prevent dangerous overheating, especially when multiple devices are charging. Avoid units that feel excessively hot during normal use.
Smart Usage Strategies for Optimal Small-Space Integration
Choosing the right expander is half the battle; implementing it wisely ensures it delivers maximum benefit without creating new headaches in your compact environment.
Strategic Placement Based on Daily Routines
Don’t just put it where an outlet exists; put it where you use your devices most. Is it bedside for overnight charging? Under the desk for work gadgets? Inside a media console? Align the expander’s location with your actual charging and power needs to minimize cord runs and keep surfaces clear.
Minimizing Visible Cord Chaos
Use adhesive cable clips, short braided sleeves, or even discreet channels along baseboards to route the expander’s power cord and device cables neatly. Keeping cords bundled and directed out of sight maintains the clean aesthetic small spaces require. Consider expanders with very short integrated cords where feasible.
Avoiding the Daisy-Chain Danger
This cannot be stressed enough: never plug one outlet expander or power strip into another. This practice, known as daisy-chaining, is a primary cause of electrical fires due to circuit overload. A single, appropriately rated expander per wall outlet is the safe and code-compliant approach, even in small spaces.
Regular Load Monitoring
Periodically assess what’s plugged in. It’s easy to accumulate devices over time. If you find yourself consistently maxing out the expander’s capacity, it’s a sign you need to reevaluate your setup or potentially consult an electrician about adding an outlet – a safer long-term solution than overloading.
Compatibility Checks for Specialized Appliances
While great for chargers and low-wattage electronics, compact expanders are generally not suitable for high-draw appliances like space heaters, hairdryers, microwaves, or vacuum cleaners. Always check appliance wattage and the expander’s rating. When in doubt, plug high-wattage devices directly into the wall outlet.
Frequently Asked Questions
Frequently Asked Questions
Can I use a compact USB outlet expander with a space heater or microwave? No, absolutely not. Space heaters, microwaves, and other high-wattage appliances draw significant power that can easily overload a compact expander, creating a serious fire hazard. Always plug these directly into a dedicated wall outlet.
How do I know if an outlet expander is truly safe for my home? Look for legitimate, visible safety certifications like UL or ETL on both the product and its packaging. Check its maximum wattage/amperage rating and ensure it exceeds the combined load of your devices. Avoid units that feel flimsy, get excessively hot, or lack clear certification marks.
Do all USB ports on these expanders charge devices at the same speed? No. USB-A ports typically offer slower charging (5W, 10W, maybe 18W with QC), while USB-C ports with Power Delivery (PD) can offer much faster charging (18W, 30W, 65W+). Check the specifications for each port’s output wattage to understand charging speeds.
Is it safe to plug the expander behind furniture like a couch or desk? Generally, yes, if there is adequate airflow around the unit and it doesn’t get pinched or covered by fabric/dust. Ensure it’s not buried under items that trap heat. Avoid placing it where it will be constantly compressed or where cords could be damaged.
Why does my outlet expander feel warm during use? Some warmth is normal, especially when multiple devices are charging, due to energy conversion. However, it should never be hot to the touch. Excessive heat indicates potential overload, poor quality, or a faulty unit – unplug it immediately and replace it.
Can I use an outlet expander in a bathroom or kitchen near water sources? Only if the expander is explicitly rated for damp or wet locations (look for specific safety certifications for these environments). Standard expanders are designed for dry indoor use only and pose a shock risk near sinks or bathtubs.
What’s the difference between an outlet expander and a power strip? An outlet expander plugs directly into a single wall outlet and provides additional sockets in the same location, often with minimal cord. A power strip has a longer cord and typically offers more outlets, surge protection, and is designed to be placed further from the wall outlet. Expanders are for direct, space-constrained use.
Do these take up the grounding slot on my outlet? Quality expanders are designed with a “pass-through” ground. The expander itself plugs into the wall outlet using all three slots (hot, neutral, ground), and the expanded outlets also provide a grounded connection. Never use an expander that removes the ground pin.
How many devices can I safely plug into one compact expander? This depends entirely on the expander’s maximum wattage rating (e.g., 1800W) and the combined wattage of your devices. Add up the wattage of everything plugged in (check device labels). Stay well below the expander’s max rating – never exceed 80% of its capacity for continuous use.
Is it okay to leave a USB outlet expander plugged in all the time? Yes, quality, certified expanders are designed for continuous operation. However, if you notice unusual smells, excessive heat, or sparks, unplug it immediately and replace it. Periodically check for dust buildup which can affect heat dissipation.