|  | 
      
        
           
            | Option # | Top Level Part #
 | Manufacturing Part #
 | Description | Substitute Part #
 |   
            | X1232A | 595-5306 | 501-5570 
              [F] | Compact PCI (cPCI) Single Ended UltraSCSI 
              + 10/100 Ethernet | n/a |   
            | X6749A | 595-5716 | 375-0119 
              [F] | Dual Differential Ultra SCSI (cPCI) | n/a |  
  
    | Table Legend |  
    | [F] = Field Replaceable Unit (FRU) [S] = Supported, but can no longer be ordered 
                                     with this system
 [N] = No longer supported for this system
 |  |