D-Link DUB-H4. Hub interfaces: USB 2.0. Data transfer rate: 480 Mbit/s, Certification: FCC CE C-Tick. Input voltage: 5 V. Windows operating systems supported: Windows 2000, Windows 2000 Professional, Windows 98, Windows 98SE, Windows ME, Windows XP Home,..., Mac operating systems supported: Mac OS X 10.1 Puma, Mac OS X 10.2 Jaguar, Mac OS X 10.3 Panther, Mac OS X 10.4 Tiger, Mac OS X.... Width: 63 mm, Depth: 104 mm, Height: 29 mm