1. Pci-e riser card and minging rig effectively solve the insufficient interface of the motherboard. One PCI-E riser interface can be expanded to 4 interfaces to connect to the graphics card, which is your usb miner.2. The PCIE raiser mining rig adopts a plug-in board design, which is directly connected to the motherboard interface without an extension cord, and can be fixed to the chassis, greatly improving the stability and reliability 3. The main control board adopts usb 3 pci card interface to directly supply power, no need to borrow an external power cord, so that the main control board power is not interfered by the outside world, and the stability is higher 4. Reduce the number of pcie extension cable. One wire goes directly to the interface, effectively reducing excuse interference and wire loss, ensuring data reliability, and improving work efficiency 5. The pcie risers USB 3.0 card, which reduces interference between interfaces and enhances data integrity. Its perfect for bitcoin mining, and also great gpu riser.Product name: PCIE expansion card + graphics extension cable kitAdapter card model: VER009SBus interface: PCI-E 4X (compatible with x4, x8, x16/graphic interface)Number of interfaces: PCIE to USB interface*4PICE card size: 120x55x75mmSystem support: for DOS, LINUS, WINXP, WIN7, WIN10, etc.Interface: PCI-E 1X PCI-E 16X USB3.0USB cable length: 60cmPower Connector: 4pin, 6pin power connectorProduct performance: Extension cord image card 6P interface (16A power supply capability) to enhance power supplyInterface: USB 3.0 PCIeApplication: for image cardMaterial:PCB+metalcolour:blackPackage Contents:1 * PCI-E 1 to 4 USB3.0 expansion card4 * PCIE 1X to 16X 6Pin adapter card kitOnly 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.