Our Location: 2021 Alaska Packer Place At Grand Marina Alameda, CA 94501

SEALEVEL USB to 4 Port RS-232/422/485 (DB9) Serial Adapter (SeaLINK+4)

Blue Pelican Marine is committed to your satisfaction as a customer. Therefore we ask If there are any questions or problems with your purchase, please contact us BEFORE leaving any feedback at (510) 769-4858 and we will make every effort to resolve any issues you may have. 

 * Due to the complexity of Marine Electronics we are unable to FULLY Bench test every item*  

SEALEVEL USB to 4 Port RS-232/422/485 (DB9) Serial Adapter (SeaLINK+4) 

The 2403 USB serial I/O adapter provides four RS-232, RS-422, or RS-485 serial ports for USB connectivity to legacy or non-USB compliant devices. 

Each port is individually configurable for RS-232, RS-422, or RS-485. Simply install the included software and connect the 2403 serial interface adapter to your USB port. 
  • Manufacturer : Sealevel Systems
  • Interface : USB to RS-232/422/485 DB9 Adapter
  • Ports : 4
  • UART : High Speed USB/UART with 128-byte Tx FIFO and 384-byte Rx FIFO
  • Other Features : Hot Swappable
  • All modem control signals implemented
  • Automatic RS-485 enable/disable
  • Serial and USB activity LEDs
  • Max. Data Rate : 921.6K bps
  • Max. Data Distance : up to 4000ft
  • Connectors : 4 x DB9M with 72" USB Cable (CA179)
  • Power : Powered by USB connection
  • Current Requirements : +5V @ 500mA
  • Operating Temperature : 0 to +70C





The Blue Pelican
Looking for used boat parts?  You've come to the right place.  We are a Sailor's Marine Consignment Chandlery serving the San Francisco Bay Area located at Grand Marina in Alameda, California.  Our new and gently used marine equipment inventory will outfit sailors of all experience levels and interests.  Our prices are very affordable and selection is impressive.
Our listings may be concurrently shown on our show room floor.   We reserve the right to end a listing early or cancel order due to a customer buying at our physical location.
We offer returns with a return authorization.  Before shipping back your item please send email to Blue Pelican Marine through EBAY describing in detail the problem with the item and the reason for the return.  We will refund the purchase prices less shipping.  Customers are responsible for return shipping charges.  

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