4-port USB 2.0 hub provides 4 hi-speed USB 2.0 ports for your high-speed connectivity needs. This device is USB 2.0 certified and provides a data transfer rate of up to 480 Mbps (high speed). It supports Windows? 98SE, 2000, ME, XP, and Mac OS X or later. The MicroHub? 2.0 also supports USB 1.1 devices since it is backward compatible with USB 1.1 specifications. It is very easy to use, Plug-and-Play, hot swappable, and portable. Features 4 USB 2.0 ports for easy expansion Supports a data transfer rate of up to 480 Mbps 40x faster than USB 1.1 products Guarantees 12Mbps bandwidth to each port for USB 1.1 devices Plug-and-play, hot-swappable Backward compatible with USB 1.1 specifications Supports Windows 98, 98SE, 2000, ME, XP, and Mac OS X or later version Overcurrent protection LED allows easy status monitoring A-B cable tucks away when not in use 3-year limited warranty Requirements For PC users: Windows?98SE, 2000, ME, XP , Available USB 2.0 port For Mac users: Mac 8.6 or greater. Requires OS X for USB 2.0 support, Available USB 2.0 port Specifications USB specification: USB 1.1 and 2.0 compliant Cable length: 2 inches (5.0 cm) Humidity: 20~80% RH (non condensing) Transfer rate: 480 Mbps Power connections: DC adapter Operating temperature: 20~50 degree Celsius Storage temperature: 0~70 degree Celsius Operating system: supports Windows?, 98SE, 2000, ME, XP, MAC OS 8.6 or greater Power consumption: 5.0V, Ports: 4 downstream