Lenovo ThinkCentre A61 - Manual (Page 19)

3. In some models, you might have to remove the PCI adapter in order to gain
access to the battery.
4. Slide the drive bay assembly forward until the drive bay assembly is aligned
with the two slots on the sides of the chassis and remove the drive cables from
the system board. Then pull upward on the handle 1 to remove the drive bay
assembly completely from the computer.
Installing internal options
Important
Read “Handling static-sensitive devices” on page 3 before opening the
computer cover.
Installing memory
Your computer has two connectors for installing double date rate 2 dual inline
memory modules (DDR2 DIMMs) that provide up to a maximum of 4.0 GB of
system memory.
When installing memory modules, the following rules apply:
Figure 7. Removing the PCI adapter
Figure 8. Removing the drive bay assembly
Chapter 3. Installing options and replacing hardware 11