1. Chip: NEC 720101F1 (BGA)2. Support PCI 32-bit bus, bus speed is 33MHz, PCI standard version 2.23. Support PCI bus master channel4. Compatible. Plug and play.5. USB2.0 interface: Compliant with Universal Serial Bus (USB) specification revision 2.0, complies with Enhanced Host Controller Interface (ehci) specification revision 1.0, compatible with Universal Host Controller Interface (uhci) specification revision 1.1, backward compatible USB1.1 specificationData transmission rate: high-speed 480Mbp, (theoretical value) full-speed 12Mbps, low-speed 1.5Mbps;It can support the connection of up to 127 USB devices, at the same time for each USB interface;External port: USBx4, internal port: USB- A/Pinx1System requirements: At least one available 32-bit PCI slot on the personal computer;Supported operating system: for Windows98SE/Me/2000/XP/NT 4.0/XP 64-bit/ Vista, Linux, MacColour:blackMaterial:PCBSize:10 x 7 x 4cmPackage Contents:1 * Expansion CardOnly the above package content, other products are not included.Note: Light shooting 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.