IBM System x3550 M5 Type 5463 - Page 176

Attention: You must press the connector release tab in order to disconnect the
DVD drive cable from the system board. Do not disconnect the DVD drive
cable by using excessive force.
DVD drive
connector
Cable connector latch
DVD drive cable
Figure 77. DVD drive cable removal for 2.5-inch hard disk drive server models
160 IBM System x3550 M5 Type 5463: Installation and Service Guide