MSI PRO Z790-P WIFI DDR4 Manuel D'utilisation page 31

M2_1~4: M.2 Slots (Key M)
Installing M.2 module into M2_1 slot
1. Loosen the screws of M.2 SHIELD FROZR heatsink.
2. Remove the M.2 SHIELD FROZR and remove the protective films from the thermal
pads
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Important
∙ Intel® RST only supports PCIe M.2 SSD with
UEFI ROM.
M2_1
∙ If your M.2 SSD equips its own heatsink,
please remove the M.2 rubber cube in the
M2_2 M.2 slot before installing M.2 SSD. Do not
M2_3
re-install the heatsink supplied with your
M2_4
motherboard.
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