| Communication | 
| Option # | Manufacturing Part #
 | Description | Previous Part #
 | 
| X1155A
 [S] | 370-2728
 [C] | High Speed Serial Interface PCI (HSI/P) 2.0 | n/a | 
| X1157A
 [S] | 501-3028
 [C] | SunATM-155/MFiber PCI 4.0 | n/a | 
| X1158A
 [S] | 501-3027
 [C] | SunATM-155/UTP PCI 4.0 | n/a | 
| X1159A
 [S] | 501-3029
 [C] | SunATM-622/MFiber PCI 4.0 | n/a | 
| X2156A
 [S] | 375-0100
 [C] | Serial Asynchronous Interface PCI (SAI/P) 3.0 | n/a | 
| X4011A
 [S] | 501-6039
 [C] | Crypto Accelerator 4000 UTP (copper) | n/a | 
| X4012A
 [S] | 501-6040
 [C] | Crypto Accelerator 4000 MMF (fiber) | n/a | 
| X4111A
 [S] | 501-6039
 [C] | Crypto Accelerator 4000 UTP (copper) | n/a | 
| X4112A
 [S] | 501-6040
 [C] | Crypto Accelerator 4000 MMF (fiber) | n/a | 
| X6762A
 [S] | 375-3089
 [C] | Crypto Accelerator 1000 | n/a |