IBM System x3650 M4 BD Type 5466 Installation And Service Manual page 216

Figure 112. USB embedded hypervisor flash device connector
200
System x3650 M4 BD Type 5466: Installation and Service Guide
6. Locate the USB embedded hypervisor flash device connector on the system
board.
7. Align the USB flash device with the connector on the system board and push
it into the connector until it is firmly seated.
8. Slide the lockbar toward the riser-card assembly to the locked position until it
is seated firmly.