Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si Four inductors, more stable supply Supports hot plugging of external USB devices Support Windows/Linux and other operating systems No external supply Quick , loading and file transfer. Low consumption, quiet, reliable and durable. Chip: VIA805 Transmission speed: 5Gbps Slot: with PCIE 1X 4X 8X 16X slot Interface: 4 ports USB3.0 Number: PCI-E 1X 4-port USB3.0 expansion card Type: USB 3.0 PCI Card Type: adapter card Type: PCI Card Interface: 4 ports USB3.0 color:Black Material:PCB Package Contents: 1 x 4-Port Usb3.0 Expansion Card Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.