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Black rectangular USB to RS-232 adapter with two green red LEDs and DB9 port

CoolGear

CoolGear CG-2URS232A 2 Port USB 2.0 to RS-232 Auto Switch FTDI

SKU CH-XHT5-W6JN3

Lets two PCs share one RS-232 device via USB with automatic first-come-first-served switching and FTDI chipset

  • Product colorBlack
  • Connect two computers to one serial device with automatic first-come-first-served switching
  • FTDI dual chipset and MCU control ensure reliable data transfer at over 250 Kbps
  • ±15 kV ESD protection safeguards the RS-232 port against static discharge
  • Draws power directly from USB with no external adapter required
  • Dual-colour LEDs show which PC is active and when data is transmitting

Two-Port USB to RS-232 Auto Switch

The CoolGear CG-2URS232A connects two USB hosts to a single RS-232 serial device. It uses dual FTDI chipsets and MCU control to manage the connection automatically. The adapter supports data rates over 250 Kbps and meets EIA/TIA-232F specifications. It draws power directly from the USB bus with no external supply required.

Suited for Legacy Serial Sharing

This unit suits users who need two computers to share one serial instrument, barcode scanner or industrial controller on a first-come-first-served basis. A five-second timeout releases the port when the active host stops transmitting. Buyers who require simultaneous multi-drop access or software-controlled port switching should look at a different solution.

Plug-and-Play Installation

Driver support spans Windows 98 through Windows 10, Mac OS 8.6 and later, and Linux kernels. The DB9 male connector is wired for DTE mode. Dual-colour LEDs show which host owns the port (green) and TXD activity (red). ESD protection up to 15 kV guards the serial I/O. The compact 60 × 50 × 25 mm enclosure weighs 37 g.

How it compares

Measured against everything we stock in USB Adapter Cables & Dongles, at today’s prices. Recalculated every night.

Price $16.99
Pricier than about 60% of the 1,430 comparable items (median $14.99).

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Specifications

Product
Brand nameCoolgear
Model nameCG-2URS232A
Product colorBlack

Questions about this item

What USB ports must the host computer provide for the CG-2URS232A to operate?

The converter works with USB 1.1, 2.0, 3.0 and 3.1 ports and draws power from the USB bus, so no external supply is needed.

Will the auto-switch function correctly if I keep legacy serial equipment that only supports lower baud rates?

Yes, the RS-232 port meets EIA/TIA-232F and CCITT V.24 specs and handles data rates over 250 Kbps, so older gear will communicate normally.

How do the dual-colour LEDs show that the CG-2URS232A is sharing the serial port as intended?

Green lights indicate which PC is currently selected, while red flashes on each TXD transfer, confirming first-come-first-served switching with the 5-second timeout.

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