Only supported models:for Air/Pro (2013-2017),Hard disk interface: 12+16-pin SSD,Does not support for SSD,Does not support any protocol SSD,Does not support M.2 B/M Key solid state 4TB power-free storage (plug and play) Core technical parameters Plug and play: no external power supply/driver installation required 2G file transfer in about 1 second,Compliant with USB 3.2 Gen 2 x2 standard,The measured speed is up to about 2000MB/s Solution:If using M.2 NVMe solid state (M-Key 2280 specification), you need to purchase an additional M.2 to 12+16 pin adapter. 2. Actual speed data [Different memory versions of hard disks have different speeds, for reference only] 128GB SSD: continuous read ≈400 MB/s 512GB SSD: continuous read ≈800 MB/s 1TB SSD: continuous read ≈1500 MB/s Theoretical : 20Gbps (about 2000MB/s) Note: Due to differences in SSD versions and chips, the actual speed may be lower than the Color: Silver Material: Aluminum Alloy Package Contents: 1 x Aluminum SSD Enclosure 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.