Features: brand new and high quality With 4 type C ports, high quality metal material, more stable connection, reduce hardware contact failures, resulting in dropped lines and speed problems, suitable for x1/x4/X8/x16 slots 15PIN interface power supply is more sufficient, dual main control chip, compared with traditional 4pin interface to provide more sufficient power to ensure stable operation of the device, Equipped with vl822+ASM3142 dual chip high-speed and stable transmission Multi-device expansion capability, to meet the simultaneous use of mobile hard drives/Udisk mobile phones and other devices 1G file is transmitted in 3 seconds with forward and backward blind insertion Specifications: Product model: ULS-10044 Bus interface: PCIEx1 (for X4/X8/X16) Power supply interface: 15 PIN Sata Expansion interface: Type-C x4 Transmission rate: 5Gbps Product chip: vl822+ASM3142 Support system: Windows7/8/10, Linux Colour:Black Material:metal Size:approx 87x80mm/3.42x3.15in Note: There might be 1-3 for cm error of size for manual measurement. The color's deviation might differ due to different monitor settings, please kindly understand. Package includes: 1 x Expansion card