Dell Optiplex(980 - System Board Connectors; Controls and Lights

OptiPlex 980 Technical Guidebook Page 7
Back Panel Connectors
1 Parallel Connector
2 Serial Connector
3 Link Integrity Light
4 Network Adapter Connector
5 Network Activity Light
6 Wi-Fi Antenna (optional)
7 Headphone Connector
8 Line-in/Microphone Connector
9 USB 2.0 connectors (6)
10 VGA Connector
11 eSATA Connector
12 DisplayPort Connector
13 Keyboard Connector
14 Mouse Connector
System Board
1 Service Mode jumper (SERVICE_MODE)
2 RTC reset jumper (RTCRST)
3 Battery socket (BATTERY)
4 PCI card connectors (SLOT 2 & 3)
5 PCI Express x16 card connector(SLOT1)
6 PCI Express x16 (wired as x4) connector (SLOT4)
7 Internal serial card connector (SERIAL2)
8 Speaker connector (INT_SPKR)
9 PCI Express x1 Wireless card connector (PCIE_WLS1)
10 Thermal Sensor connector(THRM3)
11 Fan connector (FAN_CPU)
12 Power connector (12V POWER)
13 Memory module connectors (DIMM_1-4)
14 Front-Panel connector (FRONTPANEL)
15 Internal buzzer (BEEP)
16 Password jumper (PSWD)
17 SATA drive connectors (SATA0-3)
18 Intruder connector (INTRUDER)
19 Internal USB connector (INT_USB)
20 Front I/O Connector(FIO)
21 Power connector (MICRO_PWR)