This PCIE USB adapter is made of solid material, which can withstand use.Features the aluminum alloy material, which has high durability, not easy to deform. Fine workmanship, ensures practicality.FeaturesColor:Assorted ColorMaterial:Aluminum alloySize:12.00X7.00X2.00cm4.72X2.75X0.79inMode: PCIECompatible slots: PCIE x4x86USB interface: 2 x USB 3.0 portsTransfer rate: USB 3.0, 5Gbs Upgrades desktop to USB 3.0 interface for faster data transfer. Uses PCIE interface for higher stability and better compatibility in use. Supports multiple operating systems, easy installation, simply plug into PCIE slot. Can provide a secure and stable connection, preventing data loss and damages. With fine workmanship, simple in design and very practical in use, easily win your favors.Package list: 1 x expansion card