Feature:100% brand new and high quality.Quantity:1pcsFully compliant with USB 2.0 specification4 High Speed USB 2.0 ports and 1 Power switchUSB 2.0 HUB supporting a transfer speed up to 480MbpsBackwards compatible with USB 1.1Connects up to 2 devices without a power adapterIndividual port over-current protectionSystem requirements: for Windows 98/for SE/2000/for Me/for XP/for Vista/7,for Mac OS 9.1~, for Mac OS 10.2~, for Linux Kernal 2.4 or laterPlug and play, no driver installation requiredIndicator light status 1 power LEDPentium Processor-based computer with USB 2.0 port availableSize: (8.7 x 2.2 x 1.9)cm(L x W x H)Color: Black, WhitePackage Included:1 x USB 2.0 Hubwe don't offer retail package.