This protection card is suitable for installing M.2 SSD on protection card for testing purposes to avoid damage to gold finger. It can also convert short-sized solid-state hard disk into a long-sized solid-state hard disk, but one thing must be noted, the thickness increase after conversion, please confirm installation space size of machine! The working principle of protection card is extremely simple. This is a one-to-one connection line. There is no need to go through chip conversion in middle, so no driver is required, and it not change any performance of your hard disk! Note: M.2 hard drives have multiple protocols. Please be sure to choose a protection card that is consistent with hard drive protocol you have. If protocol is inconsistent, it cannot be used. Support KEY, M KEY interface Support NVME/ (NGFF) protocol Support 2230, 2242, 2260, 2280, 22110 size hard drives Color: Green Material: PCB Package Contents: 1 * M.2 hard disk test protection board Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.