Remove The I/O Board With Cables - Lenovo Yoga 9i Hardware Maintenance Manual

Figure 13. Disconnect the battery pack and I/O board cables
Step 2. Disconnect the fan cables and remove four screws.
Figure 14. Remove the fans
Screw specifications
M2 x L3.5
Go to
https://support.lenovo.com/partslookup
replacement parts:
Fan

Remove the I/O board with cables

Make sure the following FRUs (or CRUs) have been removed.
36
Yoga 9i (14", 7)Hardware Maintenance Manual
Number of screws
4
to look up the Lenovo part numbers of the following