|  | 
| Backplane/Centerplane |  
| Option # | Manufacturing Part #
 | Description | Previous Part #
 |  
| 4500A | 501-6028 | System Expander Board | n/a |  
|  |  | n/a |  
|  |  | n/a |  
| n/a | 370-5877 1 | Starcat Service Cart, for storage of FRUs during centerplane replacement | n/a |  
| n/a | 501-4936
 [F] | Sun Fireplane Interconnect | n/a |  
| n/a | 501-5378
 [F] | Centerplane Support Board FRU (IBM SDI5/6 ASIC)
 | n/a |  
| n/a | 501-6376
 [F] | System Expander Board | n/a |  
|  |  | n/a |  
| n/a | 501-6803
 [F] | Sun Fireplane Interconnect | n/a |  
| n/a | 501-6818
 [F] | Centerplane Support Board FRU (NEC SDI6 ASIC)
 | n/a |  
| n/a | 501-6835 | System Expander Assembly | n/a |  
|  |  | n/a |  
|  |  | n/a |  
| n/a | 501-6884 | System Expander Assembly | n/a |  
|  |  | n/a |  
|  |  | n/a |  
| n/a | 501-7156
 [F] | Centerplane Support Board FRU (NEC SDI7 ASIC)
 | n/a |  
| n/a | 501-7238 [F] | System Expander Board, L | n/a |  
| n/a | 540-3993 [F] | System Controller/Centerplane Support Board Carrier Plate | n/a |  
| n/a | 540-4085 [F] | System Expander Carrier Plate (Slots 1, 2, 3, 6, 7, 8, 10, 11, 12, 15, 16, and 17) | n/a |  
| n/a | 540-4427 | Carrier Plate (Slots 0, 9) | n/a |  
| n/a | 540-5736 [F] | Carrier Plate (Slots 4, 5, 13, 14) | 540-4428 |  
| n/a | 540-6291 | System Controller/Centerplane Support Board Carrier Plate | n/a |  
| n/a | 541-0119 3
 [F] | Carrier Plate (Slots 1 2 3 6 7 8 10 11 12 15 16 17) | n/a |  
| n/a | 541-0120 4 | Carrier Plate (Slots 0 9) | n/a |  
| n/a | 541-0121 5
 [F] | Carrier Plate (Slots 4 5 13 14) | n/a |  
| n/a | 541-1396 6
 [F] | Carrier Plate (Slots 1 2 3 6 7 8 10 11 12 15 16 17), | n/a |  
| n/a | 541-1398 7 | Carrier Plate (Slots 0 9), | n/a |  
| n/a | 541-1399 8
 [F] | Carrier Plate (Slots 4 5 13 14), | n/a |  
| 1 For centerplane replacements, it is highly recommended to order Starcat Service Carts.  See How To article 1006123.1 - Service Cart Ordering Procedure 
 
12K/20K: one service cart recommended15K/25K: two service carts recommended 2 501-6827 is a new part number assigned to 501-5179-20 in February 2004.
  (WO_28379)
 3 Required to support 1.2GHz and higher US IV Uniboards
 4 Required to support 1.2GHz and higher US IV Uniboards
 5 Required to support 1.2GHz and higher US IV Uniboards
 6 Required to support 1.2GHz and higher US IV Uniboards
 7 Required to support 1.2GHz and higher US IV Uniboards
 8 Required to support 1.2GHz and higher US IV Uniboards
 NOTE: Carrier plates 540-4085, 540-4427, & 540-5736 can not co-exist in a server with carrier plates 541-0119, 541-0120, & 541-0121
 
 |  
| 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
 |  |