Welcome to the store! Uses the main control chip from , the leader of USB3.0 Association One of the few expansion cards on the market that can support the LINUX system No external power supply needed, uses 2 5A high-power DC-DC The expansion card uses 7 high-performance solid-state capacitors, which greatly ensures the stability of the USB power supply The built-in USB is connected backwards and supports small chassis, allowing USB devices to be embedded Product Model: PCE4USB-RO5 Product Interface: PCI-E 1X (supports 1X/4X/8X/16X slots) Output Interface: Built-in dual-layer 4-port USB-A5Gbps Product Speed: 5Gbps (measured fastest 350-400M/s) Supports Size: Standard full-height baffle Main Control Chip: RENESAS uPD720201 (for original-) System Support: WIN7 WIN10 WIN11 LINUX Note: Driver installation speed is slow for systems below WIN7. It is recommended to use systems above 10 Color: As shown Material: PCB Package Contents: 1 * PCI-E Expansion Card Only the above package contents, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real one. The allowed measurement error is +/- 1-3 cm.