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AC450NX Rack Server System Product Guide
220
CPU Baseboard Configuration Jumpers
The J31 jumper block
controls the VRMs and server management outputs
determines core to bus ratio
provides parking spaces for unused jumpers
OM07314
13579111315
2 4 6 8 10 12 14 16
J31
A
B
Figure 18-1. J31 Jumper Block
Table 18-1. J31 Jumpers for VRMs and Server Management
Pins 1 and 2 Pins 3 and 4 Status
1 1 Disable VRMs
1 0 Reserved
0 1 Disable Server Management
0 0 Default/Normal Operation
Key: 0 = open; 1 = closed