Oki 70040901 Installation Instructions Manual page 6

Install the DIMM(s)
1. Locate the DIMM sockets (circled) on the control board.
2. Push out the white lock tabs at either end of the DIMM socket.
Caution!
Circuit boards can be damaged by static electricity and rough handling. To avoid
damage, ground yourself (touch metal) before handling DIMMs.
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