If you’re upgrading an older, non-grounded electrical setup, a 2 prong to 3 prong surge protector can add outlet safety and charging versatility. The products below convert polarized outlets into grounded-ready power hubs, while offering multiple outlets and USB ports. Each option combines surge protection with convenient mounting options and space-saving designs, making it easier to power modern devices in older houses. This guide highlights five solid choices and explains what to look for when shopping for a 2 prong to 3 prong adapter with surge protection.
| Product | Brand | Key Benefit | USB Ports |
|---|---|---|---|
| 2 Prong Power Strip, WRXDMC | Wrxdmc Store | 8-in-1 charging with surge protection | 3 USB |
| 2 Prong Flat Plug Power Strip, Olcorife | olcorife Store | Ultra-thin, travel-ready design | No USB-C in description; USB-A present |
| TROND 2 Prong Power Strip | TROND Store | Wide-space 3-sided outlets | 2 USB-A, 1 USB-C |
| 2 Prong Power Strip, WRXDMC | Wrxdmc Store | 12-in-1 design with mount options | 2 USB-C, 2 USB-A |
| LENCENT 2 Prong Surge Protector | LENCENT Store | High Joule rating with fire-resistance shell | 4 USB |
2 Prong Power Strip With 8 Outlets and 3 USB

The 2 Prong to 3 Prong outlet adapter from Wrxdmc converts polarized two-prong outlets to three-prong outlets, enabling safer use of modern devices in older homes. Its 8-in-1 design includes five outlets and three USB ports, supporting up to 1625 watts. The USB ports auto-detect devices and deliver optimal charging, with up to 2.4A on two USB-A ports and up to 3.0A on a USB-C port. A built-in slide-to-lock safety cover and a 13-amp circuit breaker provide enhanced protection, while the fire-resistant housing adds extra safety for household electronics.
Key features:
– 2 Prong to 3 Prong conversion
– 8-in-1 charging station
– 13A circuit breaker and safety covers
– Wall-mountable design for convenient placement
2 Prong Flat Plug Power Strip with 9-in-1 USB-C

Olcorife’s flat plug design is ultra-thin, ideal for tucking behind furniture. The 9-in-1 configuration supplies six outlets, two USB-A ports, and one USB-C port, capable of charging multiple devices simultaneously. The compact, three-sided layout keeps bulky adapters from blocking adjacent outlets. While the listing emphasizes space-saving and portability, it also delivers comprehensive charging with USB-A and USB-C options, suitable for travel or use in tight spaces where a traditional block strip would not fit.
TROND 2 Prong Power Strip with USB Ports

TROND’s 2-to-3-prong adapter features five AC outlets, two USB-A ports, and one USB-C port. The USB-A ports provide up to 2.4A each, while the USB-C port can deliver up to 3A. With a 1440J surge protection rating, this unit is designed to guard connected devices from power surges. Its three-sided outlet arrangement enhances accessibility for multiple bulky plugs and helps to minimize crowding on shared outlets. Ideal for bedrooms, kitchens, or other non-grounded environments in older homes.
2 Prong Power Strip With 12-in-1 Charging

This Wrxdmc model expands to twelve charging options with eight outlets and four USB ports, accommodating up to 12 devices from a single compact wall charger. The 1625-watt maximum is designed to cover typical home electronics, with two USB-C ports and two USB-A ports delivering a combined 3.4A (approx.). The flat 2-prong plug design helps keep outlets free and reduces space intrusion behind furniture, while the integrated overload switch provides automated protection for connected devices in older wiring scenarios.
LENCENT 2 Prong Surge Protector With USB

LENCENT offers a 1700J surge protector with 10 outlets and four USB ports, plus a 15A circuit breaker and fire-resistant shell for added safety. The polarized 2-prong to 3-prong adapter helps modernize non-grounded outlets in older homes, delivering broad compatibility with everyday devices. The unit’s multiple USB ports provide versatile charging for phones, tablets, wearables, and other peripherals, while its safety features help protect both equipment and home wiring from surges and overcurrents.
Buying Guide: Key Purchase Considerations
- Surge rating and protection: Look for joule ratings in the 1000–1700J range or higher for guarding against moderate surges. Higher ratings generally indicate better protection, but verify the unit’s clamping voltage and response time.
- Prong conversion: Confirm the device truly converts 2-prong outlets to 3-prong outlets safely, with a grounded appearance in mind. Check for safety shutters or covers to prevent accidental contact when outlets are not in use.
- Outlets and USB ports: Balance the number of AC outlets with USB ports. USB-C ports are increasingly common and may support higher charging speeds. Consider the total power draw (wattage) to avoid overloading circuits in older homes.
- Space and design: Three-sided outlet spacing helps accommodate bulky adapters. Thin flat-plug designs reduce protrusion and improve placement near furniture or appliances.
- Safety features: Built-in circuit breakers, overload protection, fire-resistant housings, and slide-lock outlet covers add layers of safety—especially important in homes with aging wiring.
- Mounting options: Wall-mount and under-cabinet mounting enhance stability and reduce clutter, particularly in rooms with limited counter space or crowded outlets.
- Warranty and certifications: Check for FCC certification, safety certifications, and manufacturer warranties to ensure long-term reliability and support.
- Compatibility: Ensure the unit supports your devices’ charging requirements, including USB-A and USB-C devices, laptops, tablets, and smart home gadgets.
This selection emphasizes practical, safety-focused 2 prong to 3 prong surge protectors suitable for older homes. Each option provides a mix of USB charging, surge protection, and space-saving designs to help maintain a reliable power setup without modifying existing wiring.