The author didn't attempt it, but it seems pretty clear 4 of the pins on the exposed docking port would be a USB bus. So all you need really is a usb stick, so

The author didn't attempt it, but it seems pretty clear 4 of the pins on the exposed docking port would be a USB bus. So all you need really is a usb stick, some wires, and some patience. The particular connector used even looks like you could directly insert/wedge thin gauge wires, no soldering required on that end: https://imgur.com/a/7T3agdg https://imgur.com/a/7T3agdg