This occurs because your software is trying to access the reader as a raw serial device while the system driver has already claimed it as a keyboard. Uninstall the HID driver and force the device to bind to the USB serial driver (usbser.sys on Windows, cdc_acm on Linux). Alternatively, write your software to read from the keyboard input stream directly, which is simpler for UID‑only applications.
Click or Auto-Detect to establish a software handshake with the reader hardware.
While the device works out of the box, the specialized (often a "ConfigTool" or "R20C Reader Setup" program) is essential for advanced functionality. The default behavior is to output the card ID in a decimal format, but the software allows for significant customization. Key Functions of the Software: r20xcusb software
Windows is detecting the hardware but cannot identify it, often due to corrupted driver cache or a damaged USB port.
This is usually a conflict. Ensure your computer's input language is set to English. If it is set to a language like French or German, the numbers may be replaced by symbols (e.g., & instead of 1 ). 2. No Data Appears This occurs because your software is trying to
Using the configuration software, you can change parameters such as bit output length, hex-to-decimal conversions, prefix/suffix additions, and frequency timing to ensure seamless integration with various third-party databases, access control panels, and time management systems. Core Features of R20XCUSB Configuration Software
Place a compatible 13.56 MHz IC card (such as Mifare S50/S70) on the reader. Click or Auto-Detect to establish a software handshake
Windows blocks unsigned drivers by default. Since the Qualcomm 9008 driver is often not Microsoft-signed, you must temporarily disable this check:
. To anyone else, it looked like a simple plastic slab. To Elias, it was the only way home.