Features: brand new and high quality USB3.0 speed is up to 5Gbps, and the transfer of 1000 songs is completed during a cup of coffee. Fixed power socket 4-Pin power interface, suitable for most chassis power supplies. You don't need to worry about whether the power supply matches. Low power consumption, environmental 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 service life, and high stability. It will not affect the power supply due to capacitor explosion. Double folding design + screw fixation, 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 Color: Black Size: approx. 121x82x22mm/ 4.76x3.22x0.86in Product Name: 4-Port 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 (4-Pin Interface) Design Features: Fast expansion of 4 USB3.0 interfaces Note: Due to the lighting effects and shooting angles, there are color differences in the product, please understand. Due to manual measurement, there is a tolerance in the product size. Package Includes: 1x 4-Port USB3.0 PCI-E Expansion Card 2x Mounting Screws 1x 15PIN to Big 4PIN SATA Male Power Cable (30cm)