|  | 
| Memory |  
| Option # | Manufacturing Part #
 | Description | Previous Part #
 |  
| X6991A
 [S] | 370-4149
 [C] | 128MB SDRAM DIMM | n/a |  
| X6992A
 [S] | 370-4150
 [C] | 256MB SDRAM DIMM | n/a |  
| X6993A
 [S] | 370-4151
 [C] | 512MB SDRAM DIMM | n/a |  
| NOTE: Although the X-options are no longer orderable, the FRU part numbers shown above should still be ordered for the Sun Blade 100. 
 |  
| 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
 |  |