Backplane supports M.2 NVMe hard drives,Compared with Micro-SD, it greatly improves the reading and writing speed of the system or files,Support NVMe SSD to boot Applicable M.2 hard drive size,Support 2280/2260/2242/2230 CM5 chassis housing,Equipped with cooling fan, ventilation hole reserved on the top, built-in fan is seamlessly integrated, and the heat dissipation effect is better Hign-concerned Chemical:None Compatible With:For CM5 Accessory Type:Extension Board Colour:As Shown Material:PCB Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * Compute Module 1 * housing 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.