The 3Com SuperStack 3 Switch 4900 1000BASE-T Gigabit Ethernet module delivers four ports worth of high-performance, feature-rich Gigabit Ethernet switching over traditional copper cabling. You can mix and match both fiber and copper gigabit switching modules for cost-effective performance in a simple, integrated platform. The module provides advanced Layer 2 switching capabilities (such as multiple priority queues per port and 802.1p-based classification), virtual LANs and VLAN tagging, standards-based multicast filtering support, and seven groups of RMON. The advanced ASIC architecture provides industry-leading gigabit switching performance, plus wire-speed IP routing to support future Layer 3 switching.