Dell OptiPlex 5270 All-in-One Service Manual page 71

3. Connect the following cables to the system board:
• Power supply unit cable [1]
• Camera cable [2]
• Touch cable [3]
• SIO_power,SIO_signal, UAJ, INT_speaker,DMIC cables [4]
• LVDC cable [5]
• Power button board cable [6]
• PSU fan cable [7]
• Back light cable [8]
Removing and Installing components 71