Macally USB 4-port Hub for Mac - White. Data transfer rate: 16 Mbit/s. Weight: 0.142 kg. Interface: USB 2.0/1.1, Type: External, Cabling technology: Plug & Play. Minimum system requirements: G3/G4, iMac or PowerBook (built-in USB port) / PowerPC with 3rd party USB adapter, Compatible operating systems: MacOS 8.6 or later