Hello all! Very, very new to the TI-99/4a. A college friend recently sold me one for $20. After picking up a TI Extended Basic cart, I found myself very interested in learning Basic as a hobby. So, I went on eBay and found a "mint condition new in box" black program recorder. If "new" means missing the manual, missing the cable, and came in a box that reeked of mildew. That's eBay for you. The tape deck itself seems fine, and I cleaned up the cable that leads to the computer. (Cable was definitely coated in mildew... ew... ) I also already had a manual, but there isn't much to it so wasn't worried about that. However this brings me to the topic at hand. C batteries will add up fast. I noticed there is an option for a DC adapter. Anyone know where I could find a compatible DC adapter? Or even an original AC adapter?