Sony PCG-R505TS - Manual (Page 105)

To Remove a Memory Module
105
To Remove a Memory Module
1 Perform steps 1 to 5 of “To install a memory module.”
2 Touch a metal object (such as the connector panel on the back of your
computer) to discharge static electricity.
3 Remove the memory module.
4 Perform steps 8 and 9 of “To install a memory module.”