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 I/O Board
 
| Workstations: | Ultra 20, 20 M2, 24, 27 |  
 
| 370-7957 | 371-2131 | 371-2131 |  
| Ultra 20 Assembly/FRU PCB 411741400017
 Bracket 340741400008
 
 | Ultra 20 M2 Assembly/FRU PCB 411749900101
 Bracket 340741400008
 
 | Ultra 24 Assembly/FRU PCB 411749900101
 Bracket 340741400017
 
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| Ultra 20 Codename: Marrakesh Ultra 20 M2 Codename: Munich
 Ultra 24 Codename: Ursa
 |  References
 Ultra 20 User Guide, 819-2146. Ultra 20 Release Notes, 819-2147. Ultra 20 M2 Service Manual, 819-6584. Ultra 20 M2 Product Notes, 819-6586. Ultra 20 M2 Installation Guide, 819-6587. 
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