Please note: just cause you have a USB port on something doesn't mean it will magically work with this cable. iOS restricts USB access to only keyboards & mice (USB HID) and MIDI devices. You cannot use it with mass storage disk devices, or UART (USB CDC) devices. Also, the device must have a USB descriptor that indicates it draws 100mA or less. Many USB descriptors say 500mA even if they don't use that much!

That said, it does work quite nicely if your device is HID or MIDI only and has the USB 100mA descriptor thingy. Our SAMD Arduino core, for example, has this fixed so you can connect a Circuit Playground Express programmed as a keyboard or for using MIDI on your iPad with NeoTrellis!