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Small green PCB with USB-A plug and DB9 serial port

Ruth's sister

Ruth's sister PL2303 USB RS232 converter adapter

SKU CH-89QS-GAKR4

USB-to-RS232 serial adapter with PL2303 chipset for legacy device connectivity

  • USB-to-serial link for legacy kit using PL2303 chip
  • Compact PCB module fits tight enclosures
  • Direct RS-232 levels without extra level shifter
  • New condition, ready for immediate integration

PL2303 USB-to-RS232 converter

The adapter uses a Prolific PL2303 chip to bridge a USB port to an RS232 serial interface. It is built as a compact PCB module for integrating legacy serial devices with modern computers. The board provides the necessary level translation for reliable data transfer.

Suits engineers and hobbyists connecting older

Not for installations requiring galvanic isolation on the serial line. Not for designs that need a DB9 gender changer or right-angle connector built in. Not for systems that cannot supply USB power to the module.

How it compares

Measured against everything we stock in Worldwide Power Cords, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 60% of the 1,208 comparable items (median $9.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How do I verify the PL2303 USB RS232 converter is working after connecting it?

The PL2303 chip should appear as a new COM port in Device Manager once the USB connection is established. Open a terminal program, select that port, and send test data to confirm the RS232 signals are transmitting and receiving correctly.

What comes with the PL2303 USB RS232 converter and what must I source separately?

The board-level adapter is supplied as the main unit. You will need to provide a USB cable for the host connection and suitable wiring or a DB9 connector for the RS232 serial interface.

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