What M.2 slot did you use and what SATA ports are you using for your HDDs? If you used the top M.2 Slot, then SATA ports 4/5 are disabled. From the manual:
M.2 Slot Breakdown
M.2 Lane Distribution
M.2 Key-M (80mm, Top) – x4
o M.2 Enable/Disable is set within the BIOS
o This M.2 Key-M slot shares lanes with SATA ports 4/5. Installing an M.2 device will disable SATA ports 4/5.
M.2 Key-M (110mm, Bottom) – x4
o M.2 Enable/Disable is set within the BIOS
M.2 Key-E (32mm) – x1
o M.2 Enable/Disable is set within the BIOS
post edited by Mister E... - 2021/10/18 19:41:46