Cisco Series Routers and Cisco VXR Routers Slot Numbering. Cisco routers have two port adapter slots. Cisco Series Routers and Cisco VXR Routers Slot Numbering. Port Adapter Slots in the Cisco Series Router. The eight-port adapter requires only a single slot in a Cisco. The slots are numbered. Cisco VXR Routers Slot Numbering. [HOST] › null › null › null › null › null › null. Cisco VXR routers have four slots for port adapters, and one slot for an input/output (I/O). Product families: UBRVXR, UBRVXR. Cisco - CI/O-2FE/E - Cisco Input/Output Controller with Dual 10/ Ethernet ; Expansion Slots: 2 x PC Card ; Interfaces: 2 x Base-TX - RJ -. Find many great new & used options and get the best deals for Cisco VXR 6-Slot Chassis Series CiscoVXR *Free Shipping* at the best online. . SKU: Part Number: NPE-G2. In Cisco series routers, port adapter slots are numbered from the lower left to the upper right, beginning with port adapter slot 1 and continuing through slot 2 for the Cisco , slot 4 for the Cisco and Cisco VXR, and slot 6 for the Cisco and Cisco VXR. It provides up to eight full-duplex serial interfaces for the Cisco 72Series routers. Controller card · CISCO. Cisco routers. Cisco VXR NPE-G2 Network Processing Engine.