|  | 
| Miscellaneous |  
| Option # | Manufacturing Part #
 | Description | Previous Part #
 |  
| X4070A
 [S] | 501-4953
 [F] | Level 2 Repeater Board | n/a |  
| 501-6418
 [F] | Level 2 Repeater Board | n/a |  
| X6800-USIV-KIT 17
 [S] | Sun Fire 6800 Power Upgrade Kit |  
| 595-7283 | Sun Fire 6800 Power Upgrade Kit Assembly | n/a |  
|  | Power Supply, A184, AC-48VDC
 | n/a |  
| X6800-USIV-KIT-Z 18
 [S] | Sun Fire 6800 Power Upgrade Kit, L |  
| 594-5781 | Sun Fire 6800 Power Upgrade Kits Assembly, | 594-3456 |  
|  | Power Supply, A184, AC-48VDC, L
 | 300-1930
 [F] |  
| XE6900-FP-SWITCH-Z 20
 [S] | Sun FIre E6900 Fireplane Switch Upgrade Kit X-Option, L |  
| 540-7086 | Level 2 Repeater Board, L | n/a |  
|  | Level 2 Repeater Board Assembly, V2, L
 | n/a |  
|  |  | n/a |  
| XE6900-USIV+KIT-Z 21
 [S] | 594-5810 | Power Supply Upgrade Kit for 1.8GHz Uniboards, L | 594-3419 |  
|  | Power Supply, A212, AC-48VDC, L
 | 300-1836
 [F] |  
| n/a | 501-7231
 [F] | Level 2 Repeater Board Assembly, L | n/a |  
|  |  | n/a |  
| n/a | 540-4523
 [F] | Sun StorEdge D240 Mediatray | n/a |  
| n/a | 594-3419 | Power Supply Upgrade Kit for 1.8GHz Uniboards, L | n/a |  
|  | Power Supply, A212, AC-48VDC, L
 | n/a |  
| n/a | 594-3456 | Sun Fire 6800 Power Upgrade Kits Assembly, L | n/a |  
|  | Power Supply, A184, AC-48VDC, L
 | n/a |  
| 17 Consists of 6 power supplies 18 Consists of 6 power supplies
 19 Required to support multiple domains with UltraSPARC IV+ processors
 20 Consists of 4× 501-7594
 21 Consists of 6 power supplies
 
 |  
| Table Legend |  
| [F] = Field Replaceable Unit (FRU) [C] = Customer Replaceable Unit (CRU)
 [S] = Supported, but can no longer be ordered with this system
 [N] = No longer supported for this system
 Price = Price this Part
 |  |