Four-port and seven-port hubs are USB 2.0-compliant, providing 480 Mbps data rate to the host and are backward-compatible with USB 1.1 and 1.0 devices. Each includes a wall-mount ac adapter that supplies 500 mA to each attached USB peripheral. Both hubs are housed in rugged plastic enclosures. The hubs are supported in Windows, Linux and other USB-aware operating systems.