EFFORTLESS PLUG AND PLAY SETUP: No drivers or software required, just plug between your computer and USB device as a usb surge protector, compatible with Windows 98SE through 11, Mac OS 8.6 +, Linux. Hot-pluggable with Class 3A ESD protection.
FLEXIBLE DUAL POWER OPTIONS: Bus powered for low-power devices like keyboards and flash drives, with optional external 5VDC power input for high-power applications like USB scanners, thermal printers, or hard drives. Power supply sold separately.