1. 2-port USB3.2 Type-C PCIE Expansion Card 2. PCI Express X1 Bus Type, Compatible PCIe x1/x4/x8/x16 Slot. 3. Compatible with for ,for MacOS and for Linux System. 4. Expand your computer with two type-c ports 5. The Adapter card is equipped with USB3.2 Gen2 Type C, which ensures fast data transmission. Plug & play and hot swapping capability. Bus speed:8GT/S Bus specification:PCI-E3.0x1 Interface specification:USB3.2 Gen2 Interface speed:about 830MB/S Note:The actual transmission speed is limited by the setting of the device connected. Colour:Black Material:PCB+Metal Package Contents: 1 x PCI-E 1x to Type-C Dual Port Expansion Card Adapter 1 x Low Profile Bracket 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.