Cipherlab 308 Usb-to-rs232 Interface Converter Driver 🔥 Bonus Inside

The CipherLab 308 USB-to-RS232 Interface Converter is a specialized communication cable used to connect CipherLab barcode scanners and mobile computers (such as the 8000, 8200, 8400, and 8700 series) to a PC. It functions as a Virtual COM (VCOM) bridge, allowing the computer to communicate with serial devices via a USB port. Technical Overview

If you need the exact file or step-by-step screenshots for the driver rollback, let me know. cipherlab 308 usb-to-rs232 interface converter driver

  • Go to the official Prolific website driver archive: https://www.prolific.com.tw/US/ShowProduct.aspx?p_id=223&pcid=41
  • Download PL2303_64bit_Installer_3.4.8.zip (or v3.3.2)
  • Do not download the latest version (v3.6+) unless you have a brand new chip.

His new PC, a sleek silver tower, had no such port. It only spoke USB. The CipherLab 308 USB-to-RS232 Interface Converter is a

How to fix (no driver article, but a clear procedure)

  1. Plug in the CipherLab 308 cable (barcode scanner not needed yet).
  2. Open Device Manager (Windows):

    Verifying the connection

    • Windows: Use a terminal program (PuTTY, Tera Term, RealTerm). Open the assigned COM port at the device’s baud rate and test sending/receiving data.
    • Loopback test: Short TX→RX pins at the RS232 end, send data from terminal — if you receive the same data, the converter and driver work.
    • Use Device Manager → Port Settings → Advanced to change COM port number if software expects a specific COMx.
    1. Plug in the CipherLab 308.
    2. Open Device Manager (right-click Start button).
    3. Look under Ports (COM & LPT) – it may show as "Prolific USB-to-Serial Comm Port" with a yellow exclamation mark, or as an unknown device under Other devices.
    4. Right-click → Properties → Details → Hardware Ids.
    5. If you see VID_067B&PID_2303 it is a Prolific chip.