Feature: 1. Secure Fastening: These PCIE riser card retainers provide secure fastening that allows you to connect the USB risers to the PCIE slot on the motherboard. 2. Higher Stability: These PCIe adapter clips help reduce or eliminate downtimes caused due to a PCIe riser coming loose in the slot, resulting in a stopped GPU or computer crash. 3. Hard Plastic: These PCIE riser card holders are made of premium hard plastic material, which is high temperature resistant, sturdy and not easy to deform. 4. Easy Installation: These PCIe USB riser locking clips can be easily installed and disassembled. Insert the 1X card into the bracket first, and then manually insert the retainer to the desired position, just snap into the slot 5. High Reliability: These PCIE riser card retainers fits PCIe Adpater Boards with top mounted USB connectors. How to Use: Insert the 1X card into the bracket first, and then manually insert the retainer to the desired position, and clip it into the slot. Specification: Item Type: PCIE Riser Card Retainer Material: Plastic Product Interface: PCIE to USB3.0 Product Size: 23 x 21mm / 0.91 x 0.83in ( Manual Measurement, Slight Error May Exist ) Working Environment: Minus 5 to 70℃ Support System: Fully Supported Package List: 10 x PCIE Riser Card Retainer