CEACENT CNS52CX16R is a self-developed internal SFF-8654(x8)*2 to PCI-E Gen4.0 slot adapter card by Ceacent Electronics . It can easily extend and adapter the built-in SFF8654 interface on the motherboard, expanding more PCI-E applications; It can also be paired with our company's similar product CNS42PE16, which requires PCIE support for split protocol. Two PCI-E x8 slots can be combined to expand into one PCIe4.0 x16 thread (with a total thread rate of up to PCIe4.0 x16), or PCI-E x16 can be prolonged. This adapter card is suitable for storage and other application environments such as ALEO dedicated servers, multi graphics card solutions, and PCI-E expansion. Colour:Green Material:PC Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Package Contents: 1 * CNS52CX16R 2-Port SlimSAS SFF-8654 8i to PCIe4.0 x16 Adapter 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.