2023年7月17日 · AFAIK USB C cables have active components inside them, especially for PD to broadcast what the max voltage/amperage is they can deliver. This includes Charger, Cable and end Device. Connecting 2 cables therefore would not work since you would end up with 2x times active components and they won't negotiate.

2022年1月18日 · So no, a USB cable has no effect on the tone. The only thing it influences is if you have a reliable connection to the USB peripheral.

2024年1月22日 · How to use USB-C to detect external devices and communicate with each other in the app? Before iPhone 15, the lighting interfaces required communication with external devices through mfi authentication, but there is no evidence to suggest that the USB-C interface requires mfi authentication.

2024年8月20日 · It's possible to disable and enable usb devices using the /sys filesystem without unplugging. By using the bind and unbind files here: /sys/bus/usb/drivers/usb.... one can disable and enable the usbs. Perhaps check here: http://karlroberts.github.io/blog/2017/01/09/disabling-usb-ports-on-linux/

2023年3月27日 · there is no specific fortinet usb console cable. So there is also no official driver afaik. FortiGates that have an usb console port use a standard usb cable (standard mini or micro usb plug). For all others you would need an usb to serial converter as written above as they only have a rj45 serial console port.

2024年7月31日 · Using the STM32L476 for a custom battery-operated application, on trying to implement the USB 2.0 through a type C receptable, I need clarity on the connections of the USB. AFAIK the VBUS sensing on PA9 should be connected through a resistor divider to reduce the voltage to a safe level when the MCU is not powered.

2014年3月11日 · AFAIK状态-32表示“管道损坏”(EPIPE)。这意味着usb通信(协议)存在问题。例如，usb设备无法正确响应usb请求，并发送一些主机不期望的数据或发送的数据不足。可能还有其他原因。 第一条消息告诉我们来自主机的"get device descriptor“和"set address”请求有问题。

2020年12月16日 · Summary: USB devices not detected on connection. Hardware: 4B 2GB; Genuine SD card with aprox 11GB free. Official USB C PSU; Various USB devices including: Several mass storage devices (all USB 2 so not UAS) including card readers; Several USB 2 WiFi adapters; USB ethernet adapters; Pi zero in gadget mode; Software:

2023年5月1日 · Do you use USB-hub? Is it a powered USB-hub? Afaik, 8bitdo controllers can work in different modes (DInput/XInput, etc.), try switching them (at least 8bitdo wireless dongle can).

2021年11月7日 · AFAIK, mac doesn't support display daisy chaining. You are indeed correct. macOS only supports Thunderbolt daisy chaining. They never bothered implementing USB-C DisplayPort MST. This is correct. I’ve just tested with intel Mac pro with new Dell U3223QE which support display daisy chain through MST and DSC.