Lattepanda Alpha 864 failing to detect WD NVMe

I recently purchased a LP Alpha to serve as a Media Center PC on a living room TV, and was hoping to add a Western Digital WD Blue SN550 NVMe for additional storage. The Alpha runs well on it's own, but doesn't seems to detect the drive in either the BIOS or in Windows. I have reseated the drive a couple of times, but it only goes in one way, so I don't think it's a connection issue. Is there a compatibility issue with that drive, or perhaps a BIOS update that it needs to work?