WS-C4500X-16SFP+
Catalyst 4500-X 16 Port 10G IP Base, Front-to-Back, No P/S
sku: SKU79761 WS-C4500X-24X-ES
Catalyst 4500-X 24 Port 10G Ent. Services, Frt-to-Bk, No P/S
sku: SKU79781 WS-C4500X-24X-IPB
Catalyst 4500-X 24 Port 10G IP Base, Front-to-Back, No P/S
sku: SKU79791 WS-C4500X-32SFP+
Catalyst 4500-X 32 Port 10G IP Base, Front-to-Back cooling
sku: SKU77531 WS-C4500X-40X-ES
Catalyst 4500-X 40 Port 10G Ent. Services, Dual P/S
sku: SKU77541 WS-C4500X-F-16SFP+
Catalyst 4500-X 16 Port 10G IP Base, Back-to-Front, No P/S
sku: SKU79771 WS-C4500X-F-32SFP+
Catalyst 4500-X 32 Port 10G IP Base, Back-to-Front cooling
sku: SKU77551 
