Optional Ps2 / Serial Port - Dell OptiPlex 3020 Technical Manualbook

2 PSWD Jumper (PSWD)
3 SATA Connector (HDD)
4 PCH chip
5 M.2 socket (SLOT1_M.2)
6 Memory Connectors (DIMM1, DIMM2)

Optional PS2 / Serial Port

Dell - Internal Use - Confidential
9 Room for text | Dell Inc., 2015
8 System Fan Connector (FAN_SYS)
9 Processor Socket
10 SERVICE MODE Jumper
(SERVICE_MODE)
11 PS2 / Serial Port Connector
(KB_MS_SERIAL)
12 RTCRST Jumper (RTCRST)