![Is the GND-pin of an USB-port connected directly to common ground? - Electrical Engineering Stack Exchange Is the GND-pin of an USB-port connected directly to common ground? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/skjGe.jpg)
Is the GND-pin of an USB-port connected directly to common ground? - Electrical Engineering Stack Exchange
![Amazon.com: USB AUX Car Switch + USB 4 pin Connecting Wire + AUX 12 pin Harness Cable | Compatible with BMW 1 3 5 6 E81 E82 E87 E88 E90 E91 E92 Amazon.com: USB AUX Car Switch + USB 4 pin Connecting Wire + AUX 12 pin Harness Cable | Compatible with BMW 1 3 5 6 E81 E82 E87 E88 E90 E91 E92](https://m.media-amazon.com/images/I/71KvXDnCDeL.jpg)
Amazon.com: USB AUX Car Switch + USB 4 pin Connecting Wire + AUX 12 pin Harness Cable | Compatible with BMW 1 3 5 6 E81 E82 E87 E88 E90 E91 E92
![Metra AX-USB-MINIB USB Port Cable Allows you to connect the factory USB port on select 2010-up American vehicles to a new car stereo at Crutchfield Metra AX-USB-MINIB USB Port Cable Allows you to connect the factory USB port on select 2010-up American vehicles to a new car stereo at Crutchfield](https://images.crutchfieldonline.com/ImageHandler/trim/750/457/products/2020/1/120/g120AXMINIB-F.jpg)