Adopting golden finger plug-in design, it can be directly connected to the motherboard PCI-E slot, which has reliable and stable operation.This product uses PCI-E interface for direct power supply, no external power supply is required.Made of PCB material, the riser card extender is durable.The length of this product is 6.4cm, the width is 5.6cm and the height is 2cm.It is suitable for mining. This product can solve the lack of PCI-E interface on the motherboard, and this product can be expanded to 4 PCI-E interfaces.Item Name: Riser Card ExtenderMaterial: PCBInterface: USB3.0Data Transmission Speed: 5000 (MB/s)Features: Reliable, Stable, High SpeedSize Details: 6.4cm x 5.6cm x 2cm/2.52" x 2.2" x 0.79" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Riser Card Extender