Dell EMC IDPA DP4400 - Replace an M.2 Module

Figure 34 Remove the system cover
Replace an M.2 module
The M.2 modules are installed on the BOSS card, which is installed on expansion card
riser 1. The BOSS card is removed from the expansion card riser so that the M.2
modules can be accessed.
Remove BOSS card from expansion card riser 1
Procedure
1. Pull the expansion card latch out of the slot.
2. Hold the BOSS card by its edges, and pull the card until the card edge
connector disengages from the expansion card connector on the riser.
Remove and replace assemblies
Replace an M.2 module 51