C3210 Series

ION Gigabit Ethernet Media and Rate Converter Module
10/100/1000Base-T to 1000Base-SX/LX

The ION C3210 is a media converter module that provides an interface between 10/100/1000Base-T ports and 1000Base-SX/LX ports, allowing users to integrate fiber optic cabling into 10/100/1000 copper environments. Operating at Layer 2, the data link layer, this converter not only converts copper to fiber, it also provides rate conversion allowing legacy 10/100 copper devices to connect to 1000Base-SX/LX fiber. The ION C3210 is a manageable device when installed in a managed ION chassis.

NDAA Compliant

C3210 Series Overview


  • Copper and Fiber Auto-Negotiation
  • Switch Selectable Speeds
  • Auto-MDI/MDIX
  • Link Pass Through
  • Remote Fault Detect
  • Pause
  • Automatic Link Restoration
  • IEEE 802.1p QoS, IPv4 TOS/DiffServ, IPv6 traffic class
  • IEEE 802.1Q Port VLAN, tagging and doubling tagging (Q in Q)
  • Field Upgradeable Firmware
  • Virtual Cable Test on UTP port
  • Unidirectional data transmission
  • Bandwidth Allocation
  • DMI, digital diagnostics per SFF-8472
  • RMON counters for each port
  • Can be used in any ION Platform Chassis
  • Secure unidirectional transmission
  • Standards based, will link with any standard 10/100/1000Base-T and any standard 1000Base-SX or -LX ports

C3210 Series Tech Specs


  • IEEE 802.3
  • IEEE 802.3ab
  • IEEE 802.3u
  • IEEE 802.3z
  • IEEE 802.1p
  • IEEE 802.1Q

Data Rate

  • 10/100/1000 Mbps; Layer 2

Max Frame Size

  • 10,240 Bytes (jumbo frame support)
  • 1,632 Bytes when linked to an xGFEB10xx-120


  • SW1: TP Auto-Negotiation
  • SW2: TP Speed
  • SW3: TP Duplex
  • SW4: Link Pass Through
  • SW5: Fiber Duplex
  • SW6: Unused


  • Hardware/Software mode, Auto-MDI/MDIX

Status LEDs

  • PWR (Power): ON = Connection to powered backplane
  • LACT (Fiber Link): ON=Fiber link, Blinking=activity
  • UTP Duplex/Link: Orange=half duplex link,
  • Blinking = half duplex activity, Green = Full duplex link,
  • Blinking =Full duplex activity,
  • Off = 10 Mbps operation (or no link),
  • Orange = 100 Mbps operation, Green = 1000 Mbps operation


  • Width: 0.86” [22 mm]
  • Depth: 6.5” [165 mm]
  • Height: 3.4” [86 mm]

Power Consumption

  • 3.6 Watts, 300mA @ 12 VDC


  • Environment specs are dependent on the chassis chosen
  • Operating: 0°C to 50°C
  • Humidity: 5% to 95% (non-condensing)
  • Altitude: 0 – 10,000 ft.


  • 1 lb. [0.45 kg]


  • Greater than 250,000 hours (MIL-HDBK-217F)
  • Greater than 667,500 hours (Bellcore)


  • CISPR/EN55022 Class A, EN55024, EN61000,
  • FCC Class A, CE Mark


  • Lifetime

C3210 Series Downloads

Additional Product Information

Note: Some Documentation may have Transition Networks named or pictured. Transition Networks was acquired by Lantronix in August 2021. Learn more about the acquisition here.

Visio Stencils

Plan your network with Microsoft Visio Stencils. You must log in or create a MyLantronix account to access Visio Stencils.

Firmware Downloads

Keep your products up to date by downloading the latest firmware. You must log in or create a MyLantronix account to download firmware. 

Lantronix Part # Name Description Order Now
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Lantronix Part #
C3210 Series

10/100/1000Base-T (RJ-45) [100 m] to 1000Base-SX 850nm multimode (SC) [62.5/125 µm fiber: 220 m/722 ft.] [50/125 µm fiber: 550 m/1804 ft.] Link Budget: 8.5 dB

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Lantronix Part #
C3210 Series

10/100/1000Base-T (RJ-45) [100 m/328 ft.] to 1000Base-SX 850nm multimode (LC) via SFP [62.5/125 μm fiber: 220 m/722 ft [50/125 μm fiber: 550 m/1804 ft.] Link Budget: 8.0 dB

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Lantronix Part #
C3210 Series

10/100/1000Base-T (RJ-45) [100 m] to 1000Base-LX 1310nm single mode (SC)[10 km/6.2 mi.] Link Budget: 10.5 dB

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Lantronix Part #
C3210 Series

10/100/1000Base-T (RJ-45) [100 m] to 1000Base-X SFP Slot (empty)

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Compatible Accessories
Lantronix Part #
SFP Modules
SFP Modules
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