Features: Brand new and high quality PCI bus master access. Hot-pluggable: allows plug and play connection. Increased speeds: data moves up to 480mbits/sec (mb/s). High speed (480 Mbps), full speed (12 Mbps), and low speed (1.54 Mbps) data transfer rates. Reliability: Complies with OHCI, EHCI, and standard PCI. Compatibility: Supports USB 1.1 and 2.0 under Windows 98 SE, ME, 2000, and XP. Via USB 2.0 chipset 5 ports (4 external ports + 1 internal port) PCI card Supports up to 127 devices. Supports hot-swap and wake-up devices. Supports all USB compatible devices. Supports Windows 98, ME, 2000, XP, Vista operating systems. Support Systems: Vista, Windows ME/XP/2000/98/SE. For: Universal Serial Bus 2.0 Specification Revision. Open Host Controller Interface Specification for USB Rev 1.0a. Enhanced Host Controller Interface Specification for USB Rev 0.95. 32-bit 33MHz host interface compatible with PCI Specification Version 1.1. Specifications: Item: PCI to 4-Port USB 2.0 Card Transfer Rate: 480 Mbps Main Chip: VIA Chip Note: Please allow 0-1 cm error due to manual measurement. Please ensure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1pc x PCI to 4 SUSB 2.0 Card