USI-82GS-M2 is a 8-Port Gigabit and 2-Port Gigabit SFP Layer 2 (L2) managed industrial switch.

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USI-42GSP is a 4-port Gigabit PoE and 2-port Gigabit SFP industrial unmanaged Ethernet switch. Ports 1 to 4 of the switch operate at 10/100/1000 Mbps speed and provide PoE features. The design of USI-42GSP PoE is fully compliant with IEEE 802.3af and IEEE 802.3at power supply standards. The switch automatically detects device power consumption and delivers up to 30 watts over Cat 5,6 cables with 25.5 watts available to devices. The switch tracks its power budget (PoE budget) of 120W and grants power only when it is available. This product is designed for an industrial environment. USI-42GSP provides power redundancy with dual 44-57VDC input, it has IP40 rated metal housing with DIN rail mounting bracket. The switches have 6 kV surge protection to protect against damages caused by random power spikes. USI-42GSP operates in temperatures at -40~75°C (-40 °F ~ 167°F) and addresses the needs of industrial automation control. LED indicators on the front panel show ports and system operating status providing clear real-time diagnostics and troubleshooting of network failures if any occur.

  • Complies with IEEE 802.3i, IEEE802.3z, IEEE 802.3u, IEEE802.3x, IEEE802.3ab standards
  • 4 x 10/100/1000Mbps Auto MDI/MDI-X Ethernet ports
  • 2 x 1000Mbps SFP Slots
  • 4 x PoE ports conform to IEEE802.3af, IEEE802.3at standards
  • Delivers up to 30W to PDs, PoE budget up to 120W
  • Supports IEEE802.3x flow control for Full-duplex mode and Half-duplex backpressure
  • 4K MAC address table with auto-learn option and automatic aging
  • LED indicators for monitoring PoE and Link / Activity
  • Dual 44~57VDC inputs with power redundancy
  • Power off Alarm (2-pin relay output for a user-configured alarm, max. rated 24VDC @ 1A)
  • Metal chassis design supports IP40 protection grade and a mounting on a DIN rail
  • Switch surge protection up to 6 kV


General features


IEEE 802.3i, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3x, IEEE 802.3z, IEEE 802.3at, IEEE 802.3af

Monitoring and Management

Web management interface


Telnet connection


SNMP support



The number of switch ports

4 x 10/100/1000Mbps RJ-45 ports (Auto Negotiation/Auto MDI/MDIX), 2 x 1000Mbps SFP ports


4 x PoE ports compliant with IEEE 802.3at/af; power pin assignment: a-mode, pins 1 and 2 (V+), pins 3 and6 (V-)

PoE budget


Switching Capacity

12 Gbps

Jumbo Frame

9600 Bytes

Mac Address Table


Packet Forwarding Rate

8.93 MPPS

Packet Buffer

1.75 Mb

Transfer Method




162 mm (6.37 inches)


36 mm (1.41 inches)


102 mm (6.37 inches)

Further information


Dual DC 12~48V, 6-pin terminal block connector, maximum consumption 125W

LED indicators

PWR, Link/Activity, PoE, SFP (per port)

Operating Temperature

-40℃ to 75℃ (-40 °F to 167°F)

Storage Temperature

-40℃ to 85℃ (-40 °F to 185°F)

Operating Relative Humidity

5% to 95% (non-condensing)

Package Contents

USI-42GSP switch, DIN rail mounting kit, User Manual



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