| Communication | 
| Option # | Manufacturing Part #
 | Description | Previous Part #
 | 
| X1066A
 [S] | 501-3028
 [F] | SunATM-155/MFiber PCI 3.0 | n/a | 
| X1067A
 [S] | 501-3027
 [F] | SunATM-155/UTP PCI 3.0 | n/a | 
| X1068A
 [S] | 501-3029
 [F] | SunATM-622/MFiber PCI 3.0 | n/a | 
| X1074A 1
 [S] | 370-3868
 [F] | SCI Adapter (SCI/P) | n/a | 
| X1133A
 [S] | 375-0130
 [F] | Crypto Accelerator I | n/a | 
| X1152A
 [S] | 370-2811
 [F] | FDDI/P SAS 2.0 | n/a | 
| X1153A
 [S] | 370-2812
 [F] | FDDI/P DAS 2.0 | n/a | 
| X1154A
 [S] | 375-0001
 [F] | Token Ring Interface PCI (TRI/P) 4.0 | n/a | 
| X1155A
 [S] | 370-2728
 [F] | High Speed Serial Interface PCI (HSI/P) 2.0 | n/a | 
| X1157A
 [S] | 501-3028
 [F] | SunATM-155/MFiber PCI 4.0 | n/a | 
| X1158A
 [S] | 501-3027
 [F] | SunATM-155/UTP PCI 4.0 | n/a | 
| X1159A
 [S] | 501-3029
 [F] | SunATM-622/MFiber PCI 4.0 | n/a | 
| X2154A
 [S] | 375-0073
 [F] | Token Ring Interface (TRI/P) 5.0 | n/a | 
| X2156A
 [S] | 375-0100
 [F] | Serial Asynchronous Interface PCI (SAI/P) 3.0 | n/a | 
| X3895A
 [S] | 370-3922
 [F] | Cluster 4 port SCI switch, Dolphin Model D515 | n/a | 
| X3901A
 [S] | 530-2869
 [F] | Cluster SCI Cable, 2M | n/a | 
| X3903A
 [S] | 530-2871
 [F] | Cluster SCI Cable, 7.5M | n/a | 
| X3904A
 [S] | 530-2872
 [F] | Cluster SCI Cable, 10M | n/a | 
| X4011A
 [S] | 501-6039
 [F] | Crypto Accelerator 4000 UTP (copper) | n/a | 
| X4012A
 [S] | 501-6040
 [F] | Crypto Accelerator 4000 MMF (fiber) | n/a | 
| X4111A
 [S] | 501-6039
 [F] | Crypto Accelerator 4000 UTP (copper) | n/a | 
| X4112A
 [S] | 501-6040
 [F] | Crypto Accelerator 4000 MMF (fiber) | n/a | 
| X6762A
 [S] | 375-3089
 [F] | Crypto Accelerator 1000 | n/a | 
| n/a | 501-4901
 [F] | Remote System Control (RSC) Card | n/a |