On Sun, 2 Feb 2025, Steve Lewis via cctalk wrote:
  Didn't the original TRS-80 have a kind of screw
up, where the tape and
 display connector were the same?
 Actually, years later the Atari Lynx had a similar mishap - the power
 charger and headphone jack port look identical?  (something like that, and
 would cause damage if used incorrectly)
 Steve 
On the back (starboard side), there are THREE 5 pin DIN connectors.  Power
(external cord-wart), video (composite), and cassette.
yes there were incidents regarding those.
The original IBM 5150 (PC) had two 5 pin DIN connectors on the back. For
keybpoard, and cassette IBM didn't sell a cable, but the Radio Shack
cassette cable for TRS80 worked fine..