Dell OptiPlex GX280 - Manual (Page 284)

1 power connector (POWER) 15 line-in, line-out, and microphone connectors
(AUDIO)
2 RTC reset jumper (RTCRST) 16 network connector (NIC) and USB connector
(USB2)
3 floppy drive connector (DSKT) 17 USB connectors (USB1)
4 internal speaker (SPEAKER) 18 diagnostic lights (DIAG LED)
5 CD/DVD drive connector (IDE) 19 serial port connector (SER1) and video connector
(VGA)
6 front-panel connector (FRONTPANEL) 20 parallel port connector (PAR)
7 serial ATA drive connectors (SATA0, SATA1, SATA2, SATA3) 21 power connector (12VPOWER)
8 standby power light (AUX_PWR) 22 processor connector (CPU)
9 battery socket (BATTERY) 23 heat-sink/blower retention pad
10 PCI Express x16 connector (PEG) 24 fan connector (FAN)
11 PCI connectors (PCI0, PCI1, PCI2) 25 serial port 2 connector (SER_PS2)
12 PCI Express x1 connector (PE1) 26 memory module connectors (DIMM1, DIMM2,
DIMM3, DIMM4)
13 CD drive analog audio cable connector for optional analog audio
cable (CD_IN)
27 password jumper (PSWD)
14 front-panel audio cable connector (FRONTAUDIO)