High quaility product,Brand new. Easy plug-play connectivity and setup. Supports USB 2.0 devices while being fully backward compatible with USB 1.1 devives. Independent full speed downstream USB 2.0 OHCI ports. Supports transfer rates of 1.5/12/480 Mbps. Supports 32 bit CardBus PC Card Type II slots . Operating Temperature: 0 to 45 centigrade . Hot-plugging, and wake-up supporting . USB Bus Power: (PC Card w/o Adapter) +5V, 100mA per port, (PCI or PC Card w/ Adapter) +5V, 500mA per port . Card Size: 85.6 x 54 x 5mm System Requirement :Available 32-bit CardBus / PCMCIA Type II slot Works with Microsoft Windows 98/2000/ME/XP