TM4C123GH6ZRB: USB CDC Device upstream flow-control signaling - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums
GitHub - NordicPlayground/node-usb-cdc-acm: Userspace javascript implementation of a USB CDC ACM driver, on top of libusb.
![Overview of enumeration of interface collections on USB composite devices - Windows drivers | Microsoft Learn Overview of enumeration of interface collections on USB composite devices - Windows drivers | Microsoft Learn](https://learn.microsoft.com/en-us/windows-hardware/drivers/usbcon/images/cdcflags-wpd.png)