Dahua-CS4220-16GT-190 20-Port Cloud Managed Desktop Gigabit Switch with 16-Port PoE

Meets the requirements of IEEE802.3,IEEE802.3u,IEEE802.3x,
IEEE802.3ab,IEEE802.3z standards.
• Meets the requirements of IEEE802.3af, IEEE802.3at, Hi-PoE, and
IEEE802.3bt power supply standards.
• Manages PoE power consumption and PoE power on/off. Supports
Intelligent PoE.
• A wide operating temperature range and a full metal casing that is
fully-enclosed and dust-proof.
Long Distance PoE
The transmission distance of a PoE port can be up to 250 m, meeting
the requirement of wired transmission (bandwidth reduced to 10
Mbps).
Spanning Tree Protocol (STP)
Uses algorithms that calculate the best loop-free path through a Layer
2 network while providing path redundancy to prevent the occurrence
of broadcast storms and enhance the stability of operations and
services.
PoE Watchdog
Adopts the innovative PoE Watchdog. PoE Watchdog can be switched
on by dialing/turning on the WEB page switch. It enables the switch
to automatically detect port status and restart the failed ports to
recover connection in case of IPC connection exception. This enables
intelligent operation and maintenance management in its true sense
and effectively reduces manual maintenance costs.
Loop Protection
When a loop is detected, the loop alarm will be triggered and the
elimination mechanism will activate to prevent broadcast storms from
occurring.