3.8Replacing the cooling fans

6.Remove the four screws securing each fan to the fan bracket to remove them from the fan bracket.

Note: The Transport GX21 (B2735) uses two different types of cooling fans which operate at different speeds. The two fans installed nearest the power supply have a peak speed of 15,000 rpm. The remaining 3 fans have a peak speed of 11,500 rpm. The two fans nearest the power supply should be connected to the speed-controllable pin headers (CPU1_FAN and CPU2_FAN) on the mother board. See 3.8.1 Cooling fan con- nections.

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Chapter 3: Replacing pre-installed components

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Tyan Computer B2735 user manual Replacing the cooling fans