Features:

1. 4 PoE ports (10/100Mbps) for data and power transmission
2. 2 uplink ports (10/100Mbps) for network backbone connection
3. Supports IEEE802.3AF/AT standards for PoE devices
4. 250-meter extended transmission distance
5. Total power budget: 78W (52V 1.5A)
6. Each PoE port supports up to 30W output
7. MDI/MDIX auto flip and self-negotiation on all ports
8. Full-duplex flow control and half-duplex backpressure support
9. High-speed forwarding for stable data packets

Specifications:

1. Model: UT-B42A
2. Ports: 4 PoE + 2 Uplink (10/100Mbps)
3. Transmission Distance: Up to 250 meters
4. Power Supply: 78W total, 52V 1.5A
5. Max Power per Port: 30W
6. Standards: IEEE802.3AF/AT, IEEE802.3x
7. Auto Negotiation: Supported
8. Flow Control: Full-duplex and half-duplex modes