Features: brand new and high quality The USB3.0 speed is up to 5Gbps, and the transfer of 1000 songs is completed during a cup of coffee. Fixed power socket 4Pin power interface, suitable for most chassis power supplies. No need to worry about whether the power supply matches. Low power consumption, environmental for protection and energy saving. The power supply is stable and sufficient to ensure that each interface meets the 5V 0.9A USB3.0 power supply standard. It is built with all solid capacitors in one piece, which has the characteristics of high temperature resistance, long life, and high stability. It will not affect the power supply due to the explosion of the capacitor. Double folding design + screw fastening, the motherboard fixing bracket adopts the double folding scheme design is firm, durable, firm and stable. It is also equipped with two mounting screws, which become integrated with the main unit when the screws are tightened. Specifications: Material: Printed Circuit Board + Metal Colour: Black Size: approx. 121x82x22mm/ 4.76x3.22x0.86in Product name: 4Port USB3.0 PCI-E expansion card Product model: PVU3-4P-V1 Output interface: USB3.0 TPYE-A interface x4 Input interface: PCI-E host interface Product power supply: chassis power supply (4Pin interface) Design features: rapid expansion of 4 USB3.0 interfaces Package Includes: 1x 4Port USB3.0 PCI-E Expansion Card 2x Mounting Screws 1x 15PIN to Large 4PIN SATA Male Power Cord (30cm) note: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is a tolerance in the product size.