... .0 version HUB with 4 port2. High Speed USB2.0, Compliance with USB1.13.With 4 ports and ... andf data transfer rate up to 480Mbps4 Extensively compatible with scanner, digital camera, digital vidicon, optical mouse ... required7.Single chip integrated USB HUB controller with embedded proprietary processor8.Support windows 98/me/2000 ... humidity10% - 90% 4 port usb hub with high quality and low price