08-26-2018 06:22 PM - edited 08-26-2018 06:25 PM
You also have a slot, which can hold 2.5 inch SSD.
HMM, page 122.
09-04-2018 09:13 AM
The M900 Tiny can hold one 2.5" SATA drive (up to 15mm but that barely fits), and one M.2 drive SATA or NVMe.
If you add a M.2 NVMe drive its highly recommended to enable ASPM in the system firmware since they can get very hot.