3 ms·

ADB and PS/2 didn't look the same. Yes, small circles but IIRC ADB is 4 pins, PS/2 is 6 - and neither could be plugged to the other.

• bshep 6y ago
  IIRC the rectangular peg in the ADB vs PS2 cable were slightly different and hence incompatible.
• rvense 6y ago
  And ADB predates PS/2 by about six months, so...