Product name: M.2 to USB3.0 expansion card Chip: ASM1184 Data transfer speed: 625 (MB/s) Product interface: M.2 Key PCIE Number of interfaces: PCI-E X1 interfacex4 System: Support os//Linux Material:PCB+Metal colour:Black Package Contents: 2 x expansion card 2 x screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 1. 4-port USB graphics card extension cable expansion card - computer expansion M.2 PCIE interface adapter card, a computer expansion card with a powerful main control chip, supporting PM function. 4. ASM1184 main control - adopts the latest chip solution, high-speed transmission, stable performance, and strives to meet the needs of users for solid-state data space. 2. High-speed transmission - PCIe 3.0 X2 uplink speed 16Gbps, 4-port USB3.0; high-speed transmission to meet your data needs. 3. Stable and reliable - It has multiple protection functions such as overcurrent protection, overvoltage protection, suppression, and short circuit protection. The main control chip adopts Metal heat dissipation, which is efficient and stable. 5. Simple installation, ready to use, very