... SUP6-E Physical Characteristics Catalyst 4500 E-Series Sup 6-E, 2x10GE(X2) w/ Twin GigWS-C4503-E Cat4500 E-Series ... 3-Slot Chassis, fan, no psWS-C4506-E Cat4500 E-Series 6-Slot ... Chassis, fan, no psWS-C4507R-E Cat4500 E-Series 7-Slot Chassis ... fan, no ps, Red Sup CapableWS-C4510R-E Cat4500 E-Series 10-Slot Chassis, fan, no ps, ...