Features:
USB Type-C PD Chargers
USB Type-A Chargers
Multi-Port USB Chargers
Integration-Ready Charging PCBAs
RS-232 | RS-422 | RS-485 | 512 Bytes Receive | 512 Bytes Transmit Superior Build Quality: Housed in a rugged steel chassis with built in mountable…
Model# USBG-COMi-M
$87.49In stock
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RS-232 | 512 Bytes Receive | 512 Bytes Transmit | FTDI Superior Build Quality: Housed in a rugged steel chassis with built in mountable flanges, the…
Model# USBG-COM-M
$46.49In stock
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RS-232 | RS-422 | RS-485 | 384 Bytes Receive | 128 Bytes Transmit Superior Build Quality: Housed in a rugged steel chassis with built in mountable…
Model# USB-COMi-SI-M
$138.99In stock
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RS-232 | 512 Bytes Receive | 512 Bytes Transmit Superior Build Quality: Housed in a rugged steel chassis with built in mountable flanges, the serial adapter…
Model# USBG-COM-SI-M
$114.99In stock
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RS-232 | 128 Bytes Receive | 384 Bytes Transmit Superior Build Quality: Housed in a rugged steel chassis with built in mountable flanges, the serial adapter…
Model# USB2-8COM-M
$227.99In stock
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USB to RS232 Industrial Serial Adapter Compact Industrial RS232 Serial Adapter bringing 4 DB9 RS232 Ports from one simple connection. Helps expand your system COM…
Model# USB2-4COM-M-CBL
$117.49In stock
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USB to Serial Adapter for RS422 and RS485 Applications The USB-4COMi-SI-M is a USB to Quad RS-422 485 Optical isolated serial adapter and is designed for…
Model# USB-4COMi-SI-M
$409.49In stock
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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.