Data Transfer Switch DB25 Parallel port Switch box 2-Port A/B - AB

Manual 2 PORT A/B Data Transfer Switch Box

Vintage Manual Data Transfer Switch Box Centronics 2 Channel A/B Switch

Kentek USB USB A to B 2 Way Data Transfer Switch Box Button IO AB Port PC Device

Manual Data Transfer Switch Box 2-Position 2-Port A/B - AB Serial Switchbox

Vintage Manual 2 PORT A/B Data Transfer Switch Box B & 6 ft. Cable

Vintage 2 Way 2 Port A/B Data Transfer Switch Box Input Output