multiple outlets

Most compact adapters list 3 outlets, some provide 4, and larger surge-protecting strips can offer up to 6 outlets. In these listings the typical range is 3–6 outlets.

Surge ratings in these listings span from a few hundred joules up to about 1,080 joules. Several units also note built-in safety features such as an integrated circuit breaker and automatic shutdown technology to protect against spikes and overloads.

Some units include two USB ports (combined output shown as 3.4 A), while others list two USB-A ports plus one USB-C port. Example outputs in these listings include USB-C at 5V/3A and USB-A at 5V/2.4A; some products also show a total USB output such as 5V/3.4A.

Space-saving designs mentioned include flat or right-angle plugs, a 360° rotating flat plug for flexible positioning, and cube-style adapters that provide extra room for bulky plugs so multiple adapters can be used simultaneously.

Listings commonly cite safety certifications such as UL Listed and ETL Listed. Some units also note fire-resistant construction, for example a PC shell rated UL94-V0, and other entries reiterate ETL certification as an indicator of compliance with safety standards.

Cord and plug styles include flat plugs and right-angle (45°) plugs for tight spaces, braided fabric cords for durability and tangle resistance, and rotating flat plugs that allow flexible placement behind furniture.