Dell E33S001 Owner's Manual page 84

Cabling two 3.5-inch hard drives
Figure 42. Cabling two 3.5-inch hard drives to the PERC card
1 hard drive/optical drive power connector on the system board
3 PERC card
5 SATA/optical drive connector on the system board
7 optical drive
84 Installing and removing system components
2 SAS port A
4 system board
6 cable routing clip
8 hard drive (2)