Chapter 1: Introduction
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NS3550-8T-2S Industrial Managed Switch User Manual
integrated power supply source with a wide range of voltages (12 to 48 VDC or 24
VAC) for worldwide high availability applications requiring dual or backup power inputs.
Being able to operate under the temperature range from -40 to 75°C, the industrial
managed switch can be placed in almost any difficult environment.
Flexible and extendable solution
The industrial managed switch features 100BASE-FX and 1000BASE-SX/LX SFP
(Small Form-factor Pluggable) fiber-optic modules, meaning the administrator now can
flexibly choose the suitable SFP transceiver according to the transmission distance or
the transmission speed required to extend the network efficiently. The industrial
managed switch supports the SFP-DDM (Digital Diagnostic Monitor) function that can
easily monitor real-time parameters of the SFP for the network administrator such as
optical output power, optical input power, temperature, laser bias current, and
transceiver supply voltage
Product features
Physical port
• Eight 10/100/1000BASE-T gigabit RJ45 copper ports.
• Two 100/1000BASE-X mini-GBIC/SFP slots, SFP type auto detection.
Industrial case and installation
• IP30 aluminum case
• DIN-rail and wall-mount design
• Redundant power design
• 12 to 48 VDC, redundant power with polarity reverse protect function
• AC 24 V power adapter acceptable
• Supports EFT protection 6000 VDC for power line
• Supports Ethernet ESD protection for 6000 VDC
• -40 to 75°C operating temperature