Features: brand new and high quality One Set Riser(6PIN Power Supply): 2 layer PCBs bard designing. Use for graphic card mining. 1-slot PCI-E 1X to 4 slot 16X riser card with high speed USB 3.0 cable. High speed USB 3.0 shield cable is flexible for 1U,2U,3 U chassis. Support 4 port high speed PCIe 16X card. Solid capacitor provide for extra stable power supply for PCI-e card . Function: Dedicated for bitcoin mining. One Set-blue 4-Port Riser Card: 4 Slots brings great extendability. Plugs directly to the board without any extender cable, can be fixed to the for case. PCI-E slot power solution, no for extra power cable needed. Only one cable to the slot, easy and convenient to settle and install. With IC heat radiator. Specifications: Type name: PCIe to 4-port USB3.0 Riser Card for Mining Color:Black Material: Metal+Plastic Bus Type: PCI-E X1 Port Quantity: 4x USB 3.0 4-Port Riser Card Size: approx.12x7.5x5.5cm/4.72x2.96x2.17in Supported OS: for DOS, for Linux, for Windows XP/7/8/10 Package Includes: A/B Optional A: 1Set x PCI-E Riser Board(6 pin) B: 1Set x PCI-E Riser Board (sata) note: Due to the original production of for raw materials shortage and production batches are different, the card slot and the cable color will have some differences, but the card is the same function, please rest assured absolutely does not affect the normal use, hope to understand.(Colors will be shipped randomly!) There might be little error of size for manual measurement. The colors deviation might differ due to different monitor settings, please kindly understand.