Cisco WS-X6816-GBIC Network Switch Component Networking

Designed for distribution and core layers and for data-center and Web-hosting applications, Cisco Catalyst 6500 series dCEF256 optical interface modules provide line-rate Gigabit Ethernet forwarding with the following operational advantages:
Backplane connection-Uses dual 16Gbps full-duplex serial channel connections to the switch fabric on a Supervisor Engine 720 or a SFM/SFM2 module
Slot requirements-Can occupy any slot in any Cisco Catalyst 6500 Series chassis except the 6513 chassis which requires installation in slots 9 through 13 (the only slots on the chassis with dual fabric connections).
Supervisor engine-Supports Supervisor Engine 2 with a SFM or all versions of Supervisor Engine 720.
Distributed forwarding mode and performance-Equipped with the field-upgradeable with dCEF forwarding daughter cards; the interface module delivers optimal performance, up to a sustained 24 Mpps per slot, by using the dCEF engine and dCEF tables located on the DFC/DFC3 daughter card
Optics-Supports hot-pluggable gigabit interface converters (GBICs).