The Dell HK0CR is a reverse-airflow fan module for the S60 series, exhausting air at the port face rather than the power-supply face. It is a hot-swappable field-replaceable unit.
Why airflow direction matters
A rack switch mounted with its ports toward the cold aisle sits backwards relative to the servers around it. Reverse-airflow cooling corrects the direction so the switch exhausts into the hot aisle with everything else, instead of dumping warm air into the intake side of the rack. Fans and power supplies must agree on direction - a chassis with one of each fights itself and runs hot.
Replacing a failed fan
Fan modules are consumable. They are the only moving part in a switch and they are the first thing to fail in a dusty or warm environment, usually years before anything else. Keeping a spare on the shelf turns a fan failure into a five-minute swap rather than a chassis replacement, and a switch that has already lost redundancy is one fan away from a thermal shutdown.
Compatibility
S60 series switches. Confirm the airflow direction of the unit you are servicing before ordering - the normal-airflow module is a different part and the two are not interchangeable.
Condition
Refurbished, tested and covered with warranty.
Related models
Specifications
| Airflow direction | Reverse airflow |
|---|---|
| Platform | Dell S60 Series |
| Serviceability | Hot-swappable field-replaceable unit |
| Shipping weight | 2.0 lbs |
