HP ProLiant ML30 Gen10 Plus Maintenance And Service Manual page 102

11. Press the latches of the I/O assembly holder from inside of the chassis (callout 1), and then pull the the I/O front cable assembly
from the front panel (callout 2).
12. Remove the I/O cable:
a. Use a plastic spudger to pry both sides of the I/O assembly holder (callout 1), and then remove the holder from the I/O cable.
b. Remove the front I/O cable.
HPE ProLiant ML30 Gen10 Plus Server Maintenance and Service Guide 102