PortaPow offers a variety of cables including A to micro-B, A to lightning, and A to C[1]. Adafruit's website sells a lot of cables[2], including * An A exten

PortaPow offers a variety of cables including A to micro-B, A to lightning, and A to C[1]. Adafruit's website sells a lot of cables[2], including * An A extender blocking data with a switch to turn power on and off * An A to micro-B blocking data with a switch to turn power on and off * An A that splits to mini-B blocking data and micro-B allowing data * A micro-B extender splitter where one side has only power and the other side has power and data * An A extender that always allows power and has a switch to turn data on and off * An A to micro-B that always allows power and has a switch to turn data on and off * An A to triple splitter of lightning with data and power, 30pin iPhone/iPod with only power, and micro-B with only power There are other similar cables[3]. Note that naively disabling data will sometimes disable fast charging. Some data-blocking cables themselves re-implement or allow fast charging. I thought essentially no one uses mini-A or micro-A, so I don't know why you would want that. I thought USB 3 was just about faster data. If a cable always blocks data, then I don't see any use for USB 3. [1] https://portablepowersupplies.co.uk/home/micro-usb-data-blocker-usb-cable https://portablepowersupplies.co.uk/home/micro-usb-data-bloc... [2] https://www.adafruit.com/category/142 https://www.adafruit.com/category/142 [3] https://www.newegg.com/multi-color-monoprice-4-50-ft-usb-cables/p/0J2-00A0-00001 https://www.newegg.com/multi-color-monoprice-4-50-ft-usb-cab...