The WS-X6548V-GE-TX supports the 256 Gbps (CEF256) switch fabric module (SFM/SFM-2) for premier wiring closet configurations. This module is ideal for enterprise customers deploying or planning to deploy Cisco AVVID (Architecture for Voice, Video and Integrated Data) enabled wiring closets and who want Gigabit Ethernet to the desktop.WS-X6548V-GE-TX is designed for the premier wiring closet and is enabled for Cisco inline power.