Lenovo 21DK0047IX Hardware Maintenance Manual page 78

Screw specifications
M2.5 x L5.5
Step 2. Disconnect the I/O board cable from the system board. Then, disconnect the fingerprint board
cable and the power board cable from the I/O board.
Figure 67. Disconnect the I/O board cable, the fingerprint board cable and the power board cable
Step 3. Remove one screw and then remove the I/O board with cable.
Figure 68. Remove the I/O board with cable
Screw specifications
M2.0 x L4.0
Go to https://support.lenovo.com/partslookup
part:
I/O board with cable
72
Hardware Maintenance Manual
Number of screws
3
Number of screws
1
to look up the Lenovo part number of the following replacement