- 6 ports- 1000BASE-X (GBIC)- Cisco IOS Software Release 12.1(8a)EW or later- IEEE 802.3- L2-4 Jumbo Frame support (up to 9216 bytes)- Enterprise and commercial: designed for high-speed backbone, switch-to-switch applications, or small server farms- Service provider: GE small aggregation for DSLAM/PON/mobile data backhaul