If your computer doesn't have a USB A port, we feel your pain! Some newer computers only have USB-C as their only USB port, which is completely different from our current USB cables that come in our invention kits.
We solved this problem by designing our own USB cable! The cable is a 6' USB cable that is USB mini-B on one end (for the Makey Makey) to USB-C. This cable is a must for those teachers in schools wanting to use Makey Makey with newer computers and iPads!