We have just bought 2 of these and they work great in standard duplex outlets. The second one we bought was for the bathroom and we found it didn't fit a typical GFCI outlet due to the extra plastic bracket that fits the 2nd grounding plug. The solution was a simple knife with side cutters, but he was a little annoyed at the need to adapt it to a regular outlet.
Allocacoc PowerCube ExtendedUSB, 4 Outlets, 2 USB Ports, 5 ft Cable, Mounting Dock, Surge Protection, Childproof Sockets, ETL Certified - Blue
12 Review
Southwire 34930 Surge Guard 30A: Full Protection Portable with LCD Display - Superior Safety in Sleek Black Design
12 Review
π» Tupavco TP302 Ethernet Surge Protector (2 Pack) with PoE+ Gigabit and Gas Discharge Tube for Full Protection - RJ45 Lightning Suppressor - Mounting Flange - Ideal for LAN Network CAT5/CAT6 - Thunder Arrestor - GbE 1000 Mbps.
11 Review
Black 6 Outlet Surge Protector Power Strip with Rotating Flat Plug, 15A 120V, 4ft Cord
12 Review
Toldear Multi Plug Outlet π‘ Extender with Rotating Plug - White
12 Review
Xiaomi Power Strip Surge Protector 3 Sockets 3 USB Black
26 Review
Extender Xiaomi Mi Power Strip 6 CXB6-1QM NRB4025CN, 6 outlets, 10A / 2500 W white 1.8 m
27 Review
Extender Xiaomi Mi Power Strip 3, XMCXB01QM, 3 sockets, C/C, 10A / 2500 W white 1.8 m
30 Review