WH-203 USB Hub : Add 4 USB 2.0 Hi-speed ports Fully Compliant with USB 2.0 Specification Support up to 127 Hi-speed devices Backwardly Compatible with USB 1.1 Support data transfer rate at 1.5/12/480 Mbps Individual Port Over-Current Protection Easily portable Provide up to 500mA per port which is sufficient for diverse devices Power Adapter included (5V/2.6A Output) Plug & Play Support Windows 98/2000/ME/XP Support Mac OS 8.6 or above 1 Hi-speed Upstream port with Mini USB 5P Jack

WH-207 Metallic Hub: Features: 1) Expand 4 USB ports, supply up to 500mA current per port 2) Adopt the second age USB controller 3) No external power supply 4) Driverless, hot plug and play 5) Internal over current protection circuits 6) Support compatible USB 2.0, full speed up to 480Mbps 7) Support OS: Win 95 OSR2 / 98SE / Me / 2000 / XP, Linux 2.4 and Mac OS 8.5 or over version