| Memory | 
| Option # | Manufacturing Part #
 | Description | Previous Part #
 | 
| X7402A
 [S] | 512MB DDR Memory Option (2 × 256MB DIMMs) | 
| 370-5565 5
 [F] | 256MB Registered DDR DIMM (SPD 0.0) | n/a | 
| X7403A
 [S] | 1GB DDR Memory Option (2 × 512MB DIMMs) | 
| 370-4939 6
 [F] | 512MB Registered DDR DIMM (SPD 0.0) | n/a | 
| X7404A
 [S] | 2GB DDR Memory Option (2 × 1GB DIMMs) | 
| 370-4940 7
 [F] | 1GB Registered DDR DIMM (SPD 0.0) | n/a | 
| X7602A
 [S] | 512MB DDR Memory Option, SPD 1.0 (2 × 256MB DIMMs) | 
| 370-6201 | 256MB Registered DDR DIMM (SPD 1.0) | n/a | 
| X7603A
 [S] | 1GB DDR Memory Option, SPD 1.0 (2 × 512MB DIMMs) | 
| 370-6202 | 512MB Registered DDR DIMM (SPD 1.0) | n/a | 
| X7604A
 [S] | 2GB DDR Memory Option, SPD 1.0 (2 × 1GB DIMMs) | 
| 370-6203 | 1GB Registered DDR DIMM (SPD 1.0) | n/a | 
| n/a | 540-6228
 [F] | 512MB DDR FRU, SPD 1.0 (2 × 256MB DIMMs) | n/a | 
|  | 256MB Registered DDR DIMM (SPD 1.0)
 | n/a | 
| n/a | 540-6229
 [F] | 1GB DDR FRU, SPD 1.0 (2 × 512MB DIMMs) | n/a | 
|  | 512MB Registered DDR DIMM (SPD 1.0)
 | n/a | 
| n/a | 540-6230
 [F] | 2GB DDR FRU, SPD 1.0 (2 × 1GB DIMMs) | n/a | 
|  | 1GB Registered DDR DIMM (SPD 1.0)
 | n/a |