IBM THINKCENTER 8189 - Manual (Page 45)

Note: Only DDR SDRAM memory modules can be used.
To replace a memory module:
1. Remove the cover. See “Removing the cover” on page 30.
2. To locate the memory connectors. See “Identifying parts on the system board
(all machine types)” on page 38.
3. Remove the memory module being replaced by opening the retaining clips as
shown.
4. Make sure the notches in the new memory module align with the tabs on the
connector. Push or insert the memory module straight down into the connector
until the retaining clips close.
5. Go to “Replacing the cover and connecting the cables” on page 63.
Replacing adapters
Types 8185, 8186, 8192, 8413, and 8430
These type computers have three expansion slots for PCI adapters and one slot
used for an AGP adapter. Adapters must be low profile. The computer supports
adapters up to 168 mm (6.6 inches) long.
1. Remove the cover. See “Removing the cover” on page 30.
Chapter 6. Replacing FRUs 39