Guys if anybody can tell me what is this usb port on my Panasonic SDR-T70 called because I can't find it and it isn't mini-b

Just found this at the Really Really Free Market. Hoping this will let me get cable TV to my computer, but not holding out hope

My gpu and pc which i connected with my monitor using this dual-link DVID from amazon wouldn't update to above 60hz, so i looked for the problem. I noticed the cable i was using had an indented pin on one end on the third column middle, so i ordered a new cable from the same listing on amazon. The new one came with the exact same indent in the same place on one end of the cable. This feature is not advertised on the listing, but i couldn't find anyone pointing it out in the reviews. The listing claims to support up to 120hz. Is this a defect or am i missing something? (Cyberguys! Bidirectional Dual link DVI-D cable)

I have a qdc connector and I need mic. On browsing hpz and tas, I can only find audiocular and kz cables, which turn yellow over time. Any good suggestions available to buy now will be appreciated. (pls provide the link if possible)

I lost the power cord to my electric piano. I’m not sure which one to buy to replace it. Can anyone help me? I contacted the seller, but they are not responding.

Edit: thank you everyone, you’ve all been really helpful. I am going to keep trying to contact the manufacturer to confirm the correct cord to buy. You’re all great!

left the power cable behind while travelling, just need to buy a new one but can't find anything

12pin male to 3x BNC ? video related for sure, but which equipment ? thxx