Adapter card PCI E 4x do M.2 Durable adapter card PCI E 1x PCI E 4x [Dual M.2 PCIe SSD Adapter Card]: Support standard PCIE 3.0, PCIE 4.0 transmission speed, support full-channel 2 X4 full-speed SSD devices and M.2 PCIE interfaces. [2 expansion cards]: The adapter card PCI E 4X do M.2 ma 2 expansion cards that can simultaneously expand signals at full speed 2 x 32 Gb/s. [High Performance]: Double M.2 PCIE adapter card ma improved M.2 interface, which can speed up the game startup speed and improve work efficiency. [Stability]: PCIE X8 interface adopts compaction technology, with better contact and more stable transmission speed. [Function]: The adapter card can further improve the performance of your computer, so you can make the most of your computer's performance in the field of design and video. Specification: Product Model: PCENGFF N03 Product Length: 2230 2242 2260 2280 20110 Product Interface: PCI E 1X PCI E 4X Support system: WIN7/WIN8/WIN8.1/10/11 Material:PCB Size Chart: 4,5 cm x 12 cm x 1,7 cm/1,77 inch x 4,72 inch x 0,67 inch The package includes: 1x expansion card 1x SATA3.0 data cable