Phase Out

Embedded Device Server

  • Upload data directly to one or more selected hosts.
  • Provide management information to network requestors even while data transfers are in progress.

MSSLite Overview

Lantronix’s MSSLite Device Server enables OEM customers to integrate network-enabling technology into their designs. The MSSLite is designed on a compact 3.3″ by 2.3″ board with convenient header options for serial or DMA bus connections, external/internal and regulated/unregulated power options, and options for an internal or external Ethernet interface. Additional options include LEDs and a power backed-up real-time clock.

The MSSLite provides a mature and robust Lantronix TCP/IP protocol stack. This software allows the MSSLite to facilitate direct uploads of data to a selected host or multiple selected hosts, handle polling or specific requests from networked hosts and provide management information to network requestors even while data transfers are in progress. Support for DHCP, TFTP, BOOTP, RARP, SNMP and Telnet ensures easy and consistent interoperability in an IP networking environment.

In addition, Lantronix’s software makes it possible to run existing software on networked PCs that was previously limited to direct serial connections. This application transparency eliminates the need for OEM customers to develop costly new networked applications software.

There are two MSSLite models, designated as MSSLite-B and MSSLite-C. The main differences between the models are their serial interfaces, power interfaces, LEDs, and the presence or absence of a real-time clock.

MSSLite Tech Specs

Supported Protocols


Network Interface

  • Ethernet: RJ45 (10BASE-T)

Serial Interface

  • DB25 (Dual Port) DTE (Version A)
  • DB25 (Single Port) DTE (Version B)
  • IDC10 (Dual Port) DCE/DTE (Version C)

Data Rates

  • 300 bps to 38.4 Kbps

Serial Line Formats

  • Characters: 7 or 8 data bits
  • Stop bits: 1 or 2
  • Parity: odd, even, none

Modem Controls

  • RTS, CTS, DSR, DTR, CD (Version A and B)
  • RTS, CTS, DSR, DTR, CD (Version C, DCE)
  • RTS, CTS, DSR, DTR (Version C, DTE)

Flow Control

  • None


  • SNMP
  • Serial login
  • Telnet login
  • EZWebCon®

System Software

  • Flash ROM standard: new software can be downloaded from a TCP/IP host (TFTP) or over serial port

Diagnostic LEDs

  • Power (Versions A and B)
  • Activity
  • Link


  • Ethernet: Version 2.0/IEEE 802.3

Temperature Limits

  • Operating Temperature: 5 to 50°C (41 to 122°F)
  • Storage Temperature: -40 to 66°C (-40 to 151°F)
  • Maximum Temperature Change: 20°C (36°F) per hour

Relative Humidity Limits

  • Operating Range: 10% to 90% noncondensing, 40% to 60% recommended
  • Storage Range: 10% to 90% noncondensing

Altitude Limits

  • Operating Limit: 2.4 km (8,000 feet)
  • If you are operating the MSS above 2.4 km (8,000 feet), decrease the operating temperature rating by 1.8 °C for each 1,000 m (1°F for each 1,000 feet).
  • Storage Limit: 9.1 km (30,000 feet)

Physical Dimensions

  • 8.38 cm x 5.84 cm x 1.0 cm (3.3 in x 2.3 in x 0.4 in)

MSSLite Downloads

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. 

Product Notifications

You must log in or create a MyLantronix account to view product change notifications.

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