USB to 1-Port RS-422, RS-485, RS-530 DB25 Serial Interface Adapter

Part: 2102   Model: SeaLINK+485


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The 2102 USB serial interface adapter provides a single USB to RS-422, RS-485, or RS-530 serial port for providing USB connectivity to legacy or non-USB compliant devices. SeaLINK® serial interface adapters support standard PC data rates up to 921.6K bps to provide you with the horsepower your serial I/O applications require.

Sealevel’s SeaCOM USB software drivers and utilities make installation and operation easy using Microsoft Windows and Linux operating systems. After installing the software, simply connect the SeaLINK serial interface adapter to your USB port and the device is immediately recognized by the system as a standard serial port.

Do you know that adapter design can impact your application? Find out how in this USB Serial performance report.


Additional information



Operating Temperature

0°C to 70°C (32°F to 158°F)

USB Powered


Storage Temperature

0°C to 70°C (32°F to 158°F)

Serial Connector(s)


RoHS Compliant


Power Requirement

+5V @ 50mA

# of Ports


Max Data Rate

921.6K bps

Communications Chip


Max Data Distance

4000 feet

Host Interface(s)


Humidity Range

10 – 90% Relative Humidity, Non-Condensing

High Retention USB


Electrical Interface

RS-422, RS-485, RS-530


3.8" (L) x 2.3" (W) x 1.0" (H)9.66 cm (L) x 5.84 cm (W) x 2.54 cm (H)

USB Specification

1.1 Compliant2.0 Compatible

  • Compliant with RoHS and WEEE directives
  • Configurable for RS-422, RS-485, or RS-530
  • High-speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO
  • Data rates to 921.6K bps
  • Automatic RS-485 enable/disable
  • All modem control signals implemented
  • Hot-swappable
  • Powered by USB connection
  • DB-25M connector
  • Sealevel software supports Windows 98SE/ME/2000/XP/Vista and Linux operating systems
  • Includes 6′ USB device cable (Item# CA179)

Windows Software

Software: SeaCOM - Windows

Linux Software

Software: SeaCOM - Linux


Datasheet: 2102


Manual: 2102


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