Tripp Lite
1111 W. 35th Street
Chicago, IL 60609
1 773.869.1774
1 773.869.1329

USB 3.0 Multimode Fiber Optic Transceiver Ethernet Adapter, 10/100/1000 Mbps, 1310nm, 550m, LC

Model Number: U336-MMF-1G-LC New

Connects your USB-enabled computer or laptop to a 10/100/1000 Mbps fiber optic network without installing an internal Ethernet card.
  • Connects you to a wired Gigabit Ethernet network when Wi-Fi is weak or unavailable
  • Provides 1 Gbps throughput up to 550 m (1804 ft.) via multimode fiber cabling for fast Ethernet browsing
  • Supports USB 3.0 speeds up to 5 Gbps to ensure efficient data transfers
  • USB 3.0 Fiber Transceiver Ethernet adapter powered via USB, so no external power supply is required
  • Works with most laptops and PCs running Windows, Mac or Linux
  • 3-year limited warranty

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1 773.869.1774


Connects Your Laptop or PC to a Wired Fiber Network without an Internet Card Installed
This USB to LC fiber optic Ethernet adapter allows you to instantly connect your computer, laptop, tablet or other USB-compatible device to a wired 10/100/1000 Mbps fiber optic network, even if your device has no NIC (Network Interface Controller) installed. The adapter offers access to a Gigabit Ethernet network when Wi-Fi is unavailable or when a wired connection offers faster speeds. It transmits data up to 550 meters (1804 feet) from your fiber network using a wavelength of 1310nm.

Hot-Swappable for Installation Without Network Interruption
This USB 3.0 Multimode Fiber Optic Transceiver Ethernet adapter is fully hot-swappable, so you can install it without a potentially costly network shutdown or device reboot. Just connect the built-in USB cable to your device’s USB port (which also powers the adapter), and connect the LC duplex port to a high-speed managed switch, router or hub using existing or newly run multimode fiber cable (such as Tripp Lite’s N820-Series, sold separately).

Delivers Full Gigabit Ethernet Performance with Audio and Video Streaming
The compact USB to Ethernet adapter supports full 1 Gbps network speeds and USB 3.0 speeds, allowing you to transfer data efficiently and stream audio and video. The direct fiber connection minimizes the risk of data leaks and electromagnetic interference (EMI). A blue LED indicates successful Ethernet connection and data transfer. The adapter works with Windows, Mac, Linux and Microsoft Server operating systems.

Typical Applications

  • Install an LC duplex port on your MacBook, Chromebook or PC for the purpose of connecting a multimode Gigabit Ethernet network cable
  • Upload data from your notebook or download data from the Ethernet at true 10/100 Mbps speeds
  • Replace a malfunctioning Ethernet card on your laptop or computer

Package Includes

  • U336-MMF-1G-LC USB 3.0 Ethernet NIC Adapter
  • Driver CD
  • Quick Start Guide

System Requirements

  • Computer or laptop with USB-A port (USB 3.0 is required to attain USB 3.0 speeds)
  • Windows (through Win 10), Server (2012 or 2008), Mac (10.6 through 10.14) or Linux Kernel (up to 4.15) OS
  • Managed network switch
RoHS compliant


UPC Code037332225993
Built-In Cable Length (m)0.155
Built-In Cable Length (in.)6.1
Bus Powered  Yes
LED IndicatorsBlue (Power/Data)
Cable Jacket RatingVW-1
Material of ConstructionABS, PVC
Unit Dimensions (hwd / in.)0.71 x 2.2 x 1.61
Unit Packaging TypeBox
Unit Weight (lbs.)0.12
Operating Temperature Range32 to 131°F (0 to 55°C)
Storage Temperature Range32 to 140°F (0 to 60°C)
Relative Humidity5% to 90 % RH, Non-Condensing
Network Speed1Gbps
Side A - Connector 1USB 3.0 A (MALE)
Side B - Connector 1LC DUPLEX (FEMALE)
Connector PlatingNickel
USB SpecificationUSB 3.0 (up to 5 Gbps); USB 3.1 Gen 1 (up to 5 Gbps)
Driver RequiredYes
Remote Wakeup SupportYes
TechnologyUSB; USB 3.0 (SuperSpeed)
Optical PortLC
Transmission Distance550m
Mode TypeMultimode
CertificationsTested to CE, FCC, RoHS, REACH
Product Warranty Period (Worldwide)3-year limited warranty


Network Cables & Adapters
  Model Number Description
N820-01M | Network Cables & Adapters N820-01M 10Gb Duplex Multimode 50/125 OM3 LSZH Fiber Patch Cable (LC/LC) - Aqua, 1M (3 ft.)
N820-02M | Network Cables & Adapters N820-02M 10Gb Duplex Multimode 50/125 OM3 LSZH Fiber Patch Cable (LC/LC) - Aqua, 2M (6 ft.)
N820-03M | Network Cables & Adapters N820-03M 10Gb Duplex Multimode 50/125 OM3 LSZH Fiber Patch Cable (LC/LC) - Aqua, 3M (10 ft.)
N820-04M | Network Cables & Adapters N820-04M 10Gb Duplex Multimode 50/125 OM3 LSZH Fiber Patch Cable (LC/LC) - Aqua, 4M (13 ft.)

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We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at 1 773.869.1774 or email