Acer Aspire one Series Service Manual page 143

3. Replace the four screws (two each side) to secure the hard disk to the carrier.
Step Size Quantity Screw Type
HDD Carrier M3*3 4
4. Place the hard disk drive module into the bay.
NOTE: To prevent damage to the device, avoid pressing down on it or placing heavy objects on top of it.
5. Slide the HDD in the direction of the arrow to connect the HDD to the interface connector.
Chapter 3 133