Advantech ADAM-5511 Manual page 46

This chapter explains how to install an ADAM-5511 stand-alone
controller. A quick hookup scheme is provided that lets you easily
configure your system before implementing your application to it.
When inserting modules into the system, align the PC board of the
module with the grooves on the top and bottom of the system. Push
the module straight into the system until it is firmly seated in the
backplane connector. Once the module is inserted into the system,
push in the retaining clips (located at the top and bottom of the
module) to firmly secure the module to the system.