Chassis Fan Trays The chassis fan assembly provides cooling air for the supervisor engine and the switching modules. If an individual fan within the assembly fails, the FAN STATUS LED turns red. Individual fans within a fan tray assembly cannot be replaced; you must replace the entire fan tray assembly. Catalyst 6500 Series Chassis Fan Tray Support Chassis Model Supported Fan Trays Unsupported Fan Trays Catalyst 6503 FAN-MOD-3 FAN-MOD-3HS (high speed) WS-C6503-E-FAN Catalyst 6503-E WS-C6503-E-FAN FAN-MOD-3 FAN-MOD-3HS (high speed) Catalyst 6504-E FAN-MOD-4HS (high speed) N/A Catalyst 6506 WS-C6K-6SLOT-FAN WS-C6K-6SLOT-FAN2 (high speed) WS-6506-E-FAN Catalyst 6506-E WS-6506-E-FAN (high speed) WS-C6K-6SLOT-FAN WS-C6K-6SLOT-FAN2 (high speed) Catalyst 6509 WS-C6K-9SLOT-FAN WS-C6K-9SLOT-FAN2 (high speed) WS-6509-E-FAN Catalyst 6509-E WS-6509-E-FAN (high speed) WS-C6K-9SLOT-FAN WS-C6K-9SLOT-FAN2 (high speed) Catalyst 6509-NEB WS-C6509-NEB-FAN WS-6509-NEB-UPGRD 1 (high speed) N/A Catalyst 6509-NEB-A FAN-MOD-09 (high speed) N/A Catalyst 6509-V-E WS-C6509-V-E-FAN (high speed) N/A Catalyst 6513 WS-C6K-13SLOT-FAN WS-C6K-13SLT-FAN2 (high speed) N/A 1 Optional high-speed fan tray is part of the WS-6509-NEB-UPGRD kit. For systems operating with DC-input power supplies, all you need is the upgrade kit. For systems operating with AC-input power supplies, you need the upgrade kit plus WS-CAC-3000W (3000 W power supply) or better to operate the fan tray.