Industrial USB to Serial Adapters | RS232 RS422 RS485 | COM Port Retention

32 Port RS-232 USB-to-Serial Adapter
RS-232
USB to Serial RS232, 422, 485 Adapter with DIP Switch
RS-422
USB to 4 port RS-422 485 Optically Isolated Adapter
RS-485
32 Port RS-232 USB-to-Serial Adapter
Multi-Standard Series
32 Port RS-232 USB-to-Serial Adapter
CAN BUS
32 Port RS-232 USB-to-Serial Adapter
Serial Over Ethernet
Serial USB Adapter - Full RS232 Modem Control The USB-32COM-RM USB to 32 Port RS-232 Serial Adapter is designed for industrial applications and harsh environments making serial…

Model# USB-32COM-RM

$706.49

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The MSD-SRP4XM-PRO is a multi-protocol RS-232 / 422 / 485 3-in-1 serial device server that is designed to connect RS-232, RS-422 and RS-485 serial devices…

Model# MSD-SRP4XM-PRO

$295.29

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RS232 to Ethernet - Two Port Adapter The MSD-SRF2X Dual port RS-232 to Ethernet data gateway will address the need to add 2 RS-232C devices…

Model# MSD-SRF2XM

$197.99

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The NCAN-2 is designed to make a fast, simple way to communicate with CAN bus devices. The NCAN-2 adds two industrial CAN bus channel to…

Model# NCAN-2

$171.49

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The 2-Port Industrial Grade RS-232 / RS-422 / RS-485 Serial to Ethernet Device Server connects your serial equipment to IP networks with ease. PoE-powered and…

Model# MSD-SRP2XM-PRO

$217.49

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The MSD-SRP2XM-TBPRO is a multi-protocol RS-232 and RS-422 / 485 serial device server that is designed to connect RS-232, RS-422 and RS-485 serial devices including…

Model# MSD-SRP2XM-TBPRO

$208.99

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Out of stock
The MSD-SRP1XM-PRO is a multi-protocol RS-232 / 422 / 485 3-in-1 serial device server that is designed to connect RS-232, RS-422 and RS-485 serial devices…

Model# MSD-SRP1XM-PRO

$139.99

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USB Console Cable for Network Consoles A combination of two cables make up this USB to Serial RJ45 console cable giving network engineers, technicians, and…

Model# URJ4856FT

$27.99

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FAQ: Common USB to Serial Adapter Questions

Q: What is COM Port Retention and why do I need it?
A: COM Port Retention ensures that your assigned COM port number remains the same every time you plug in the adapter or reboot your PC. This prevents software communication errors and eliminates the need to manually reconfigure your application settings whenever hardware is moved.

Q: Can I use these adapters with Windows 11?
A: Yes, all Coolgear Serial adapters use modern FTDI or Silabs chipsets with WHQL-certified drivers for full Windows 11, Mac, and Linux support.

Q: What is the difference between an isolated and non-isolated serial adapter?
A: Isolated adapters use optical barriers to physically separate the electrical signals. This protects your computer from 2,500V surges and ground loops common in factory environments.

Q: Do these adapters require an external power supply?
A: Most of our single and dual-port models are USB bus-powered. High-density rackmount models (8-port+) feature integrated or external power supplies for maximum signal integrity.