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System Board 139
System Board Labels
1 Floppy drive 16 Audio line-out connector
2 Internal speaker 17 12-volt microprocessor power connector
3 EIDE2 connector 18 Network (upper) and USB connectors (2) (lower)
4 Front panel connector 19 Keyboard (lower) and mouse (upper) connectors
5 EIDE1 connector 20 Diagnostic lights
6 Suspend-to-RAM light 21 Serial 2 connector
7 PCI riser (small mini-tower computer only) 22 Parallel connector
8 Auxiliary power light 23 Serial 1 connector
9 AGP connector 24 Microprocessor and heat sink
10 PCI connectors 25 Memory module (DIMM) connectors
11 CD audio connector 26 Fan connector
12 Telephony connector (TAPI) 27 Main power connector
13 Front audio connector 28 Battery
14 Microphone connector 29 RTC reset jumper
15 Audio line-in connector 30 Password jumper
Connector or Socket Description
AUDIO Line-in, line-out, and microphone jacks
AUX_PWR Auxiliary power light
BATTERY Battery socket
CD-IN CD/DVD drive audio cable connector
CPU Microprocessor connector
DIAG_LED Diagnostic lights
DIMM_x Dual in-line memory module (DIMM) socket
DSKT Floppy/tape drive interface connector
FAN Microprocessor fan connector
FRONTAUDIO Front panel audio connector for integrated audio
FRONTPANEL Front panel cable connector
H_RISER Horizontal riser board connector; vertical PCI cards
IDEn EIDE interface connector