Support PCI-E 3.0, PCI-E 4.0 standard transmission speed. Using high-quality ball bearing ball fan, , efficient and quiet. The fan actively dissipates the NV MESS D to the stable operation of the SSD, and will not cause the transmission speed of the SSD to drop due to high temperature. Simultaneous expansion, 4*32Gbps full speed. Using high-end PCB circuit board, surface gold plating process, good conductivity, strong wear resistance, oxidation resistance, high fire rating. Support hard disk: SSD/M.2 PCI-E equipment of M.2NVME protocol Product weight: product + fan + baffle 148.8G Colour: black Material: PCB Size: 19.5x13x3.2CM Package Contents: 1 * PCIE to M.2 NVME expansion card Only the above package content, other products are not included. Note: Light 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.