While the device works out of the box, professional users often need to change the . For example, you might need the ID in Hexadecimal, Decimal, or a reversed byte order to match your existing database.
Frequency mismatch (e.g., trying to scan a 125 kHz tag with a 13.56 MHz R20C reader).
Because the R20XC relies on built-in HID drivers, standard scanning requires zero installation. However, changing the card reader layout necessitates running the vendor software utility. Follow these deployment steps: 1. Hardware Connection
A: Yes, but only if you write custom software that accesses the reader in raw serial mode. The keyboard emulation mode outputs only the UID, not the card’s stored data. To read data blocks from a MIFARE card and write them to another compatible writable card, you need full command‑level access, which requires the proprietary command set from the manufacturer. r20xcusb software
The true power of lies not in the GUI but in how it allows other programs to interface with the hardware. Once the driver is installed, you can bypass the native GUI entirely.
While the reader itself doesn't require a driver, the "software" you use to manage that data is where the magic happens.
Make sure your cursor is actively blinking inside a text field (like Notepad) before scanning. If it still fails, the device may accidentally be locked in virtual COM port mode instead of HID mode. Use the software tool to reset the device to "USB Keyboard Mode." 3. Outputted Card Numbers Are Scrambled or Incorrect While the device works out of the box,
Truncates data to 6 hex characters and parses it into an 8-digit decimal layout.
Open the configuration software, switch the device mode back to , and flash the memory. "Device Not Found" software error
R20XCUSB Software Guide: Maximizing Your 13.56MHz RFID Reader (2026 Edition) Because the R20XC relies on built-in HID drivers,
Plug the R20X device into a functional USB 2.0 or USB 3.0 port. Wait for the device to beep once and turn its LED indicator red. Open the Software: Launch the R20XUSB application.
Locate the .exe file (e.g., R20XUSB.exe or Reader_Config.exe ).
| Purpose | Command Packet (Hex) | | ------------------------------- | ----------------------------------- | | Request UID (wake up) | FF 00 00 00 00 04 D4 4A 01 00 E1 | | Read block from MIFARE Classic | FF 00 00 00 04 D4 40 01 30 XX YY | | Write block to MIFARE Classic | FF 00 00 00 10 D4 40 01 A0 XX YY |