3

system board shroud

4

redundant power supplies (optional)

5

left riser

6

SAS external controller daughter card

7

SAS RAID external controller

8

center riser

 

daughter card battery and

 

 

 

memory module

 

 

9

SAS internal RAID controller

10

SAS card connector

 

daughter card

 

 

11

RAC card

12

memory modules (6)

13

CPU/heatsink

14

dual fan module bays 1 and 2 (4 fans)

15

SAS/SATA backplane cable

16

SATA/SAS backplane cable

 

connector

 

 

17

hot plug hard drive bays 0 and 1

18

one optional slimline drive

19

LCD control panel

20

chassis intrusion switch

21

control panel assembly

22

power supply

 

 

 

dual fan modules (2 fans)

23

power distribution board

24

power distribution board cover

NOTE: In the preceding figure, the 12C cable is shown connecting over the control panel cabling. This cable should be routed under the control panel cable and the internal USB key connector. The 12C cable seats in a cable guide clip that is directly beneath the control panel connector.

The system board holds the system's control circuitry and other electronic components. The processor and memory are installed directly on the system board. Using a riser card, the system can accommodate two expansion cards. The peripheral bays provide space for up to two hard drives and an optional optical drive. Power is supplied to the system board and drives through one nonredundant power supply. The optical drive connects to the SATA controller on the system board. For more information, see "Optical Drive" on page 79.

The hard-drive bays provide space for up to two 3.5-inch SAS or two 3.5-inch SATA hard drives. The hard drives connect to a SAS controller card through the SAS/SATA backplane board. For more information, see "Hard Drives" on page 73, "Backplane Board" on page 100, and "Expansion Cards" on page 95.

During an installation or troubleshooting procedure, you may be required to change a jumper setting. For more information, see "System Board Jumpers" on page 155.

66

Installing System Components

Page 66
Image 66
Dell R300 owner manual System board shroud, Left riser, SAS/SATA backplane cable SATA/SAS backplane cable Connector