For Lenovo V17-Iil - Lenovo V15 Gen1 i Hardware Maintenance Manual

Figure 25. Disconnect cables from the I/O board
Step 2. Remove the screw, open the hinge, and then remove the I/O board.
Figure 26. Remove the screw and then remove the I/O board
Go to
https://support.lenovo.com/partslookup
replacement part:
I/O board
For Lenovo V17–IIL
Make sure the following FRU (or CRU) has been removed.
"Remove the lower case" on page 30
Step 1. Disconnect the battery pack cable, speaker cable, and the I/O board cable.
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Lenovo V14 Gen1 i, Lenovo V15 Gen1 i, Lenovo V17–IIL Hardware Maintenance Manual
to look up the Lenovo part numbers of the following