| Communication | 
| Option # | Manufacturing Part #
 | Description | Previous Part #
 | 
| X1355A-2  Price | 371-0982 | 2M, 80-Pin, 4-Port, DB37, RS449 Breakout Cable, | n/a | 
| 375-3296
 [C] | Quad Port High Speed Serial Interface PCI-X (HSI/U), | n/a | 
| X1155A
 [S] | 370-2728 3
 [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 | 
| X1233A
 [S] | 375-3259 4
 [C] | Dual Port 4x InfiniBand Host Channel Adapter | n/a | 
| X2156A
 [S] | 375-0100
 [C] | Serial Asynchronous Interface PCI (SAI/P) 3.0 | n/a | 
| X2156A-2
 [S] | 375-3420
 [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 | 
| X7405A
 [S] | 370-5464
 [C] | Hardware Cryptographic Module
(Crypto Accelerator 500) | n/a | 
| X7405A-4
 [S] | 371-0991
 [C] | Hardware Cryptographic Module (Crypto Accelerator 500), L | n/a |