Fan Header Current Capability; Add-In Board Considerations - Intel DZ77BH-55K Specification

2.5.2

Fan Header Current Capability

CAUTION
The processor fan must be connected to the processor fan header, not to a chassis fan
header. Connecting the processor fan to a chassis fan header may result in onboard
component damage that will halt fan operation.
Table 34 lists the current capability of the fan headers.
Table 34. Fan Header Current Capability
Fan Header
Processor fan
Front chassis fan
Rear chassis fan
Auxiliary chassis fan
2.5.3

Add-in Board Considerations

The board is designed to provide 2 A (average) of current for each add-in board from
the +5 V rail. The total +5 V current draw for add-in boards for a fully loaded board
(all six expansion slots filled) must not exceed the system's power supply +5 V
maximum current or 14 A in total.
Maximum Available Current
2.0 A
1.5 A
1.5 A
1.5 A
Technical Reference
63