IBM B50 - Manual (Page 165)

I/O Port Cable Assembly
Removal
1. If you have not already done so, remove the cover as described in “Removing
the Cover” on page 7-3.
2. Disconnect the following cables from the system board:
Serial Port 1 (J24)
Serial Port 2(J23)
Tablet Port(J25)
Ethernet AUI(J50)
3. Remove the screw (A) securing the I/O panel to the rear of the chassis, as
shown in the following illustration.
A
Replacement
Replace in the reverse order.
Chapter 7. Removal and Replacement Procedures 7-21