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System Board Components

Dell Precision™ WorkStation 340 Service Manual

The following figures show the principal connectors and components on the system board. See "System Board" for information on removing the system board.

Small Desktop Computer

1	floppy-drive connector (FLOPPY)	12	PCI expansion-card connectors(2)
2	battery	13	front-panel audio connector
3	removable-media drive connector (IDE SEC)	14	telephony connector
4	hard-drive connector (IDE PRI)	15	CD audio connector
5	front panel connector	16	back panel connectors
6	system board speaker	17	microprocessor power connector
7	password jumper	18	microprocessor/heat sink assembly
8	auxiliary hard-drive activity light connector	19	memory module sockets (RIMM 1 and 2)
9	CLR CMOS jumper	20	fan power connector
10	AGP card connector	21	memory module sockets (RIMM 3 and 4)
11	standby power light	22	main power connector

Mini-Tower Computer

1	floppy-drive connector (FLOPPY)	13	PCI riser board
2	battery	14	front-panel audio connector
3	removable-media drive connector (IDE SEC)	15	telephony connector
4	hard-drive connector (IDE PRI)	16	CD audio connector
5	front panel connector	17	back panel connectors
6	system board speaker	18	microprocessor power connector
7	password jumper	19	microprocessor/heat sink assembly
8	auxiliary hard-drive activity light connector	20	memory module sockets (RIMM 1 and 2)
9	CLR CMOS jumper	21	fan power connector
10	AGP card connector	22	memory module sockets (RIMM 3 and 4)
11	standby power light	23	main power connector
12	PCI expansion-card connectors (4)

System Board Labels

Connector or Component	Label
AGP	AGP card connector
AUDIO	Audio connectors
BATTERY	Battery socket
CD	CD audio connector
CLR CM	Clear CMOS jumper
CPU	Microprocessor/heat sink assembly
DIAG LED	Diagnostic lights
FAN1	Microprocessor fan connector
FLOPPY	Floppy-drive connector
FNT PNL	Front panel connector
FNT PNL AUDIO	Front-panel audio connector
KEY BRD_MOUSE	PS/2 keyboard and mouse connectors
MAIN POWER	Main power connector
PARALLEL	Parallel connector
PCIn	PCI expansion-card connector
IDE PRI	Hard drive connector secondary IDE connector
IDE SEC	Removable-media drive connector
PSWD	Password jumper
RIMM_n	Memory module socket
SERIALn	Serial connectors (2)
SCSI	Auxiliary hard-drive activity light connector
SPEAKER	System board speaker
STANDBY_LED	Standby power light
TELE	Telephony (TAPI) connector
USB_LAN	Network and Port 1 USB (2) connectors

Jumpers

System Board Jumpers

NOTICE: Before changing a jumper setting, verify that the standby power light on the system board has turned off. Otherwise, damage to your computer or unpredictable results may occur. To locate this light, see "System Board Components."

To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated.

System-Board Jumper Settings

Jumper	Setting	Description
PSWD	(default)	Password features are enabled.
		Password features are disabled.
CLR CM	(pins 1 and 2)	Normal setting—pins 1 and 2 are jumpered.
	(pins 2 and 3)	CLR CM setting—pins 2 and 3 are jumpered. See "Reset Corrupted BIOS Settings" in your User's Guide.
jumpered  unjumpered

NOTE: The CLR CM settings are also located on the system board next to the AGP card clip tab.

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