DM/DE Series 2U24, 3U, 4U rail kit installation instructions

The Rail can be either installed on a standard square-hole four-post rack or a standard round-hole four-post rack by using the round-to-square hole adaptor brackets. Before you begin, verify that you have the correct rail type by examining the PN label located on the rail (PN: SM17A38397).

Installing Rail to square-hole four-post rack

Installing Rail to round-hole four-post rack