HP ProDesk 400 G4 Disassembly Instructions Manual page 4

Figure 7 Press the ODD's latch on ODD cage
Figure 9 Use T-15 screwdriver to loose the screws of HDD
from cage
Figure 11 Disconnect SATA cable from the MB
EL-MF877-00
Template Revision B
PSG instructions for this template are available at
Figure 8 Remove the ODD from ODD cage
Figure 10 Remove the HDD from HDD cage
Figure 12 Disconnect ODD/HDD PSU cables from the MB
EL-MF877-01
Page 4