Dell POWEREDGE R805 - Manual (Page 60)

SAS/SATA Backplane Board Connectors
Figure 6 -3 shows the location of the connectors on the SAS/SATA backplane board.
Figure 6-3. SAS/SATA Backplane Board Components
Sideplane Board Connectors
See Figure 6 -4 for the location and description of connectors on the sideplane board.
Figure 6-4. Sideplane Board Connectors
25 A1 First memory module slot (processor 1)
26 A2 Second memory module slot (processor 1)
27 A3 Third memory module slot (processor 1)
28 A4 Fourth memory module slot (processor 1)
29 A5 Fifth memory module slot (processor 1)
30 A6 Sixth memory module slot (processor 1)
31 A7 Seventh memory module slot (processor 1)
32 A8 Eighth memory module slot (processor 1)
33 FAN5 System cooling fan
34 FAN6 System cooling fan
1 drive 0 connector 2 drive 1 connector
3 optical drive power (CD_PWR) 4 backplane power (BKPLN)
5 SAS connector (SAS)