2 USB 2.0 & 2 PS/2 ports allow to connect more devices to your computer. Reliable chipset D720102 (for USB port) & CHESEN CSC0101A (for PS/2 port). PCI specification revision 2.2 compliant with 66Hz & 32-bit data. Compliant with USB specification . 2.0, USB specification . 1.1 & PS/2 specification. 2 external USB type A female connectors available. 2 external PS/2 female connector available. The green one for mouse and the purple one for keyboard. Data transfer rates of high-speed (480Mbps),full-speed (12Mbps) and low-speed (1.5Mbps) per USB port. Supports plug and play for USB interfaces. Supports automatically selects and I/O address. Supports PCI sharing to save valuable resources for other I/O expansion cards. Supports PCI-bus power management interface. Bus-powered mode and no external power required for most of USB peripherals. Easy installation and no driver required. : 2000, 2003, NT4, XP, Vista, 7, 8 & Linux. Colour: black Material: PCB+metal Package Contents: 1 * 2 Port USB 2.0 & 2 Port PS/2 Combo PCI Card Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.