The Argon ONE M.2 NVMe Expansion Board connects to your existing Argon ONE Raspberry Pi 4 Case with Fan (NOT INCLUDED) to provide and Integrated M.2 NVMe SSD support through the USB 3 Ports of the Raspberry Pi 4. Ultimately turn it into a Raspberry Pi NVMe SSD Case. Argon ONE M.2 Raspberry Pi Expansion SSD board extended support for M.2 NVMe SSDs allows you to maximize the true potential speeds of your Raspberry Pi 4. You will now be able to boot via an M.2 NVMe SSD for faster boot times and larger storage capacity compared to the traditional microSD Card. Argon ONE M.2 is UASP Supported for the Raspberry Pi 4 which means you can maximize the transfer speeds of your M.2 NVMe Drive. It is compatible with any M.2 NVMe SSD. With this M.2 NVMe SSD Board, your Raspberry Pi Case will be better than ever!