Sony VAIO PCG-XG500 User Manual page 38

VAIO Notebook User Guide
Close the intercooler flap
The intercooler flap does not close automatically. You must disconnect all devices,
such as the AC adapter or monitor, which are connected to the back of the computer
before closing the intercooler flap.
1 Grasp both sides of the flap while sliding the levers with your thumbs.
Intercooler Flap
38
Intercooler flap lever