USB C Micro Controller soldered onto the original controller board so you’ll have original functionality as well as usb for modern use. You will need to open the housing via the 5.5mm bolts (4) in order to switch to the USB C functionality. I’ll also have Screw Modded back the original plastic rivets in all the major spots so that you won’t have membrane components separation and in doing so making the keyboard future serviceable. All KeyCaps will be included, no missing parts, will be a fully functional grey or blue IBM Logo model as pictured and have no damage or cracks, missing parts.