Dell OptiPlex 740 Guide De Référence Rapide page 40

NOTICE:
Be careful when opening the computer cover to ensure that you do not
accidentally disconnect cables from the system board.
2
1
10
1 drive release latch
4 power supply
7 card slots (4)
10 front I/O panel
40
Quick Reference Guide
4
3
2 optical drive
5 chassis intrusion
switch (optional)
8 heat sink assembly
5
6
9
3 floppy drive
6 system board
9 hard drive
7
8