"· All-gigabit port design · Supports IEEE802.3af, IEEE802.3at, Hi-PoE and IEEE802.3bt (red port) standards · 250 m long-distance PoE transmission (10 Mbps) · PoE Watchdog · Supports STP, RSTP, and MSTP"

"3 layer managed enterprise-level core switch High-performance switch chip, large cache, and no video lags Comply with IEEE802.3, IEEE802.3u, IEEE802.3ab, IEEE802.3z, and IEEE802.3x standards Supports STP, RSTP, and MSTP spanning tree protocol (STP)"

"The DH-TAM1GT1GT-30 PoE+ Midspan is designed to work in extreme temperature environments and in applications that experience lightning. The midspan offers a single PoE+ (802.3at) port with an internal power supply in a compact housing. The midspan carries both data and power along an Ethernet cable for easy"