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2105R USB to 1-Port RS-232 DB9 Serial Interface Adapter
2105R USB to 1-Port RS-232 DB9 Serial Interface Adapter

Part# 2105R


USB to 1-Port RS-232 DB9 Serial Interface Adapter


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The SeaLINK® single-port USB to RS-232 serial adapter utilizes Sealevel's expertise in military-grade designs by incorporating a ruggedized, overmolded enclosure into the 2105R. This improves the reliability and durability in industrial and mobile applications such as GPS navigation systems, barcode readers, signature input devices, serial printers, scales, and similar applications.

The 2105R features programmable baud rate and data formats with 128-byte transmit and 384-byte receive buffers. The USB serial adapter is compatible with all standard PC baud rates and supports high-speed communication to 921.6K bps. The 2105R is powered by the USB port and status LEDs molded into the enclosure indicate serial data activity and connection to the host.

Sealevel SeaCOM USB software drivers and utilities make installation and operation easy using Microsoft Windows and Linux operating systems. After installing the software, simply plug the 2105R into an available USB port and the serial port is recognized as a standard COM port by the host system enabling compatibility with legacy software.

The attached cable is approximately 56 inches long and fully shielded to protect the 2105R from RF and EMI interference that is common in mobile and industrial environments. Standard operating temperature range is 0 - +70C, and extended temperature range (-40C to +85C) is optional.

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

The 2105R has a DB-9M connector. If you need a DB-25M connector, order the 2101.
Host Interface(s) USB
# of Ports 1
Brand/Family SeaLINK
Electrical Interface RS-232
USB Powered Yes
RoHS Compliant Yes
Serial Connector(s) DB9M
Communications Chip USB/UART
Max Data Rate 921.6K bps
Max Data Distance 50 Feet
Power Requirement +5V @ 100mA
USB Specification 1.1 Compliant, 2.0 Compatible
Operating Temperature 0 - +70C
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
Dimensions Overmold: 2.24" (L) x 1.3" (W) x 0.6" (H)
Overall Length: 60"
  • • Compliant with RoHS and WEEE directives
  • • Rugged, military-grade enclosure improves durability in mobile and industrial applications
  • • High speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO
  • • Programmable baud rate and data formats
  • • Supports data rates to 921.6K bps
  • • Status LEDs molded into enclosure indicate serial data activity and connection to host
  • • All modem control signals implemented
  • • Powered by USB host connection
  • • Sealevel SeaCOM software supports Windows and Linux operating systems
  • • Attached cable is approximately 56 inches in length
  • • Overall length is 60 inches
  • • Standard DB-9M serial connector

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