+**/etc/udev/rules.d/54-input-club-keyboard.rules:**
+
+```
+# Input Club keyboard bootloader
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="1c11", MODE:="0666"
+```
+
+### Serial device is not detected in bootloader mode on Linux
+Make sure your kernel has appropriate support for your device. If your device uses USB ACM, such as
+Pro Micro (Atmega32u4), make sure to include `CONFIG_USB_ACM=y`. Other devices may require `USB_SERIAL` and any of its sub options.
+
+## Unknown Device for DFU Bootloader
+
+Issues encountered when flashing keyboards on Windows are most often due to having the wrong drivers installed for the bootloader.
+
+Re-running the installation script for MSYS2 may help (eg run `util/qmk_install.sh` from MSYS2/WSL) or reinstalling the QMK Toolbox may fix the issue. Alternatively, you can download and run the [`qmk_driver_installer`](https://github.com/qmk/qmk_driver_installer) package.
+
+If that doesn't work, then you may need to grab the [Zadig Utility](https://zadig.akeo.ie/). Download this, and run it on the system. Then, you will need to reset your board into bootloader mode. After that, locate the device in question. If the device doesn't show up in the list (or nothing shows up in the list), you may need to enable the `List all devices` option in the `Options` menu.
+
+From here, you will need to know what type of controller the board is using. You may see it listed in the Device Manager as `ATmega32U4` device (which is an AVR board), or an `STM32` device (Which is an ARM board). For AVR boards, use `libusb-win32` for the driver. For ARM boards, use the `WinUSB` driver. Once the correct driver type has been selected, click on the `Replace Driver` button, unplug your board, plug it back in, and reset it again.
+
+
+## WINAVR is Obsolete
+It is no longer recommended and may cause some problem.
+See [TMK Issue #99](https://github.com/tmk/tmk_keyboard/issues/99).
+
+## USB VID and PID
+You can use any ID you want with editing `config.h`. Using any presumably unused ID will be no problem in fact except for very low chance of collision with other product.
+
+Most boards in QMK use `0xFEED` as the vendor ID. You should look through other keyboards to make sure you pick a unique Product ID.
+
+Also see this.
+https://github.com/tmk/tmk_keyboard/issues/150