Dell OptiPlex 170L - Manual (Page 75)

System Board Components
1 hard drive 6 padlock ring
2 optional internal
speaker
7 heat sink and blower
assembly
3 power supply 8 system board
4 optional card cage 9 floppy drive
5 low-profile PCI card
slot
10 CD/DVD drive
1 floppy-drive connector (DSKT) 11 CD drive audio cable connector
(CD_IN)
2 CD/DVD drive connector
(IDE2)
12 front-panel audio cable
connector (FRONTAUDIO)