Features:100% brand new and high qualitySuper fast and high-capacity transfer solution, stable and reliableUSB3.0 Slots supports simultaneous operation of multiple USB 3.0, USB 2.0, and USB 1.1 devices,great extendability. Plug and play,without any extender cable, can be fixed to the case. PCI-E slot power solution, no extra power cable needed.Only one cable to the slot, easy and convenient to settle and install.With IC heat radiatorAttentions:1. This extension is applicable to the mainboard PCI - E 4X slot, Please plug in the power cord for the floppy. When plug PCI - E extension must be computer broken wires plug again.2. The form a complete set of wire rod is customized, never grab line to plug in. Remember that3. When plug wire must identify the direction, not to counter or offset, prevent burning equipment, plug wire when the socket of equipment first, then plug wire, avoid too hard plug socket pin is broken. Package Includes:1 PC x 6-port USB3.0 Riser Card for BTC Mining Specifications:Type name: 1 to 6PCI-E USB3.0 Adapter Card for BTC Miner MiningMaterial: Metal+PlasticBus Port: PCI-E 4XPCIE 4X Speed: 5GbpsPort Quantity: 6xUSB3.0Main Chip: ASM1812Size:approx 119X59mm/4.68x2.32inUpstream PCI-E interface1, 2 lane PCIe connected to root portAutomatically detect channel configuration at startupSupports transfer rates of 2.5Gb (250MB/s) and 5Gb (500MB/s) per channelDownstream PCI-E interfaceSupport S3/S4 wake-up functionSupport Ltr ; Support AERMax Payload Size = 512ByteSupport hot swap, accidental removalSupported OS: for DOS, for Linux, for Windows XP/7/8/10 note:Keycaps only, Keyboards not includedPlease 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