USB to 2-Port RS-232 DB9 Serial Interface Adapter

Part: 2201   Model: SeaLINK+2/232

(1 customer review)


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The SeaLINK® 2201 USB serial I/O adapter provides two RS-232 serial ports for USB connectivity to legacy or non-USB compliant devices. The 2201 supports standard PC data rates up to 460.8K bps.

Sealevel’s SeaCOM USB software drivers and utilities make installation and operation easy using Microsoft Windows operating systems. After installing the software, simply connect the 2201 serial interface adapter to your USB port. The device is immediately recognized by the system. Now your non-USB peripherals can have the same connection simplicity and ease of use as USB aware peripherals.

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

-50°C to 105°C (-58°F to 221°F)

Serial Connector(s)


RoHS Compliant


Power Requirement

+5V @ 500mA

# of Ports


Max Data Rate

460.8K bps

Communications Chip


Max Data Distance

50 feet

Host Interface(s)


Humidity Range

10 – 90% Relative Humidity, Non-Condensing

High Retention USB


Electrical Interface



7.1 (L) x 5.3 (W) x 1.5 (H)

USB Specification

1.1 Compliant2.0 Compatible

  • Compliant with RoHS and WEEE directives
  • High-speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO
  • Data rates to 460.8K bps
  • All modem control signals implemented
  • Serial and USB activity LEDs
  • Hot-swappable
  • Powered by USB connection
  • Sealevel software supports Windows 98SE/ME/2000/XP/Vista and Linux operating systems
  • DB-9M connectors
  • Includes 6′ USB device cable (Item# CA179)

Windows Software

Software: SeaCOM - Windows

Linux Software

Software: SeaCOM - Linux


Datasheet: 2201


Manual: 2201

1 review for SeaLINK+2/232

  1. Mark Bohach

    Sealevel 2201 Is A Proven Performer
    For our Enco Radio On-Air Audio System, I needed a USB to RS232 Interface to control and monitor our on-air switchers. It had to be easy to install and Windows 7 Compatible. The Sealevel 2201 performs these duties flawlessly 24/7 in a high stress environment.

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