MSI Z590-S01 Manuel D'instructions page 13

M2_1~2: M.2 Slots (Key M)
Please install the M.2 device into the M.2_1 & M.2_2 slots as shown below.
3
Supplied
M.2 screw
1
Standoff
M2_3: M.2 Slot (Key E)
Please install the Wi-Fi module into the M.2_3 slot as shown below.
1
Supplied
M.2 screw
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2
30º 30º
2
30º
30º
Overview of Components
13