Acer Aspire TC-780 Service Manual page 41

3. Remove the four screws securing the HDD module to the chassis.
Quantity Color
4 Silver
4. Slide the HDD module out of the chassis.
Aspire TC-780 Desktop Computer Service Guide
Torque
6.0 ± 0.5 kgf-cm
Part Number
86.SXHD1.001
Screw Type
33