A "No-Noise Kit" is now available for all Ultra 60 and Ultra 30
workstations. The kit lowers the system's fan speeds as temperature
allows, thus reducing system noise. It is intended to be installed by
Sun customers and field service personnel as a retrofit.
This $40 product enhancement consists of circuitry which incorporates a
thermal sensor to monitor temperature within the Ultra 60 and Ultra 30
system. At low temperatures, it decreases the voltage to the fans so
that they operate at a lower speed, reducing noise.
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