| I/O | 
| Option # | Manufacturing Part #
 | Description | Previous Part #
 | 
| FX800-FP
 [S] | 340-7924 [F] | Filler Panel cover for blank I/O Assembly Position (boat) | n/a | 
| X3692A
 [S] | 375-3140
 [F] | I/O Combo Card | n/a | 
| 375-3180 | Myrinet PCI Card | n/a | 
| 530-3288 [S] | Myrinet 2000 25 Meter Cable | n/a | 
| X4030A
 [S] | 501-4868 | cPCI I/O Assembly (4 slot) | n/a | 
| 540-4617
 [F] | cPCI I/O Assembly (4 slot) | n/a | 
| X4050A
 [S] | 501-4404 | PCI I/O Assembly (8 slot) | n/a | 
| 540-4616
 [F] | PCI I/O Assembly (8 slot) | n/a | 
| X4051A
 [S] | 540-6247
 [F] | PCI+ I/O Board FRU Assembly | n/a | 
|  |  | n/a | 
| X4051A-Z
 [S] | PCI+ I/O Board Option, L | 
| 540-7832
 [F] | PCI+ I/O Board FRU Assembly, L | 540-6899
 [F] | 
|  |  | n/a | 
| X4052A-Z
 [S] | 540-7831
 [F] | PCI-X I/O Assembly, L | 540-6509 10
 [F] | 
|  |  | n/a | 
| X4141A
 [S] | 540-4764 | SunFire Link Assy, w/ optical module | n/a | 
|  | cPCI Fire Link Optical Module (Paroli)
 | n/a | 
|  | Sun Fire Link Asly, w/o optical module
 | n/a | 
| X4170A
 [S] | 540-4946 | Sun Fire Link Switch | n/a | 
|  |  | n/a | 
|  |  | n/a | 
|  |  | n/a | 
|  |  | n/a | 
|  | Backplane + AC Harness + AC Module
 | n/a | 
| X4175A
 [S] | 540-5477 | Sun Fire Link Optical Module | n/a | 
|  | cPCI Fire Link Optical Module (Paroli)
 | n/a | 
| X4180A
 [S] | 537-1022 [F] | Sun Fire Link Optical Cable, 5m | n/a | 
| X4181A
 [S] | 537-1023 [F] | Sun Fire Link Optical Cable, 12m | n/a | 
| X4182A
 [S] | 537-1024 [F] | Sun Fire Link Optical Cable, 20m | n/a | 
| n/a | 540-6509 9
 [F] | PCI-X I/O Assembly, L | n/a | 
|  |  | n/a |