Cisco catalyst 4507R-E switch chassis model:C4500-E series. The 7-slot Cisco Catalyst 4507R-E chassis are ideal for Power over Ethernet (PoE) or non-PoE enterprise wiring closets, and small distribution, small core, and branch offices that require the highest level of resiliency. The Cisco Catalyst 4507R-E supports redundant supervisors to minimize downtime. These chassis support all Cisco Catalyst 4500 Series classic and E-Series line cards. YB562