Features: brand new and high quality PCI bus master access. Hot-pluggable: allows plug and for play connectivity. Increased speeds: data moves up to 480mbits/sec (mb/s). High speed (480mbps), full speed (12mbps) and low speed (1.54mbps) data transfer rate. Reliability: complies with ohci, ehci and standard pci. Compatibility: supports usb 1.1 and 2.0 under for windows 98 se, me, 2000 and xp. Via usb 2.0 chipset 5 port (4 eeinternal port + 1 internal port) pci card Supports up to 127 devices. Supports hot-swap and wake-up device. Support all usb compatible devices. Support for windows 98, me, 2000, xp, vista operating system. Support system: vista, for windows me/xp/2000/98/se. for:Universal Serial Bus 2.0 Specification Revision.Open host controller interface specification for usb rev 1.0a.Improved host controller interface specification for usb rev 0.95.32-bit 33mhz host interface compliant to pci specification release 1.1. Specifications: Item: PCI to 4 Port USB 2.0 Card Transmission rate: 480Mbps Main chip: VIA chip Package Includes: 1PC x PCI to 4 SUSB 2.0 Card note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!