PCIE Riser 1X to 16X Graphics Extension Reduce Burden 60cm USB3.0 Safe Stable USB Riser Powered Adapter Card Item Type: PCIE Riser 1X to 16X Graphics Extension Material: Printed Circuit Board Usb Cable Length: 60cm Power Cable Length: 20cm Color: Red Conversion Board Interface: 4pin + 6pin Interface for Two Graphics Cards (Directing Differently) +USB3.0 1. No Driver is Required. This Adapter Kit is Compatible with 1x, 4x, 8x and 16x Pci-e Slots on the Mainboard. Suitable for Win, for LINUX and for OS X Systems. 2. Perfect for Installing Ethereum Mining Equipment. 3. the Slot is Equipped with a Fixed Buckle, Which is Convenient to Remove the Graphics Card and the Fixed Graphics Card, and the Graphics Card Will Not Fall off from the Slot. 4. the Power Cord is Made of Pure Copper Wire, Which Can Resist Oxidation and Rust and Avoid Wire Burning at Work.