Dell OptiPlex GX270 - Manual (Page 64)

Cable Colors
System Board Components
1 hard drive 6 padlock ring
2 chassis intrusion
switch
7 heat sink and blower
assembly
3 internal speaker 8 system board
4 power supply 9 floppy drive
5 card cage 10 CD/DVD drive
Device Color
Hard drive Blue pull tab
Floppy drive Black pull tab
CD/DVD drive Orange pull tab
Serial ATA drive Blue cable