IBM RS/6000 7043 43P Series Service Manual page 227

Attention: Inserting the memory module at an angle may cause damage.
3. Inspect each memory module and ensure the gold connector is fully inserted in
the socket.
4. Reinstall any adapters you removed into their original connectors. (If you need
further information for installing adapters, see "Adapter" on page 8-19).
Chapter 8. Removal and Replacement Procedures
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