Tilt out the power supply: 
      a. Disconnect drive power cables from the power supply. 
      b. Unscrew the blue spring-loaded retaining knob until it releases. 
      c. Place one hand on top of the server to support it. 
      d. Tilt out PSU with the other hand. (Be sure the AC power cord is removed from the server before you try to tilt out the power  supply.) 

2.  SIMMs must be installed in pairs of the same size, speed, and type. All memory installed must be of the same type (either parity or ECC). Install SIMMs in the following order: A1-B1, A2-B2, A3-B3, A4-B4. 

A and B Bank Layouts

 

  3.  Touch the static-protective package to any unpainted metal surface on the server.  Then, remove the SIMM from the package. 

SIMM Orientation 

4.  Reinstall the power supply: 
      Move the cables out of the way. 
NOTE! If you have a SCSI CD rom with an external terminator on it in the single 5.25" bay, this is referred to as a "guillotine"! Carefully push the SCSI cable towards the front of the case while rotating the power supply back in. Or you WILL be sorry... 
      Tilt the power supply into the server. Press in the retaining knob and turn it to the right until it is tight. Reconnect the twisted power cables to the power supply.