Stackable Gigabit Layer 2+ switch series that supports 4 Combo SFP ports, 2 optional 10 Gigabit fiber or copper uplinks. It supports static routing and resilient failover stacking with a stacking bandwidth of up to 48Gbps. With purchase of an optional wireless switching key, this series can to support centralized AP management, wireless roaming, & rogue AP detection and containment. Enhanced security includes the ability to automatically detect and block know threats such as Trojans, Worms, and DoS attack. The DXS/DWS-3227P supports IEEE 802.3af PoE at full power on all ports simultaneously with per port power ratings up to 16.8 Watts.