Dell Precision 350 - Manual (Page 6)

Cable Colors
System Board Components
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
CAUTION: To avoid electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE: Be careful when opening the computer cover to ensure that you do not accidentally disconnect cables from the system board.
1 hard drive 6 heat sink and blower
assembly
2 internal speaker 7 power supply
3 chassis intrusion
switch
8 floppy drive
4 system board 9 CD/DVD drive
5 padlock ring
Device Color
Hard drive Blue pull tab
Floppy drive Black pull tab
CD/DVD drive Orange pull tab