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| 1703 Technical Tips: Using 2-pin Buttons with 4-pin PSB Ports | | | To use 2-pin switches or push-buttons with 4-pin ports, orient the port with the "bar" on top as shown. Plug the 2-pin PSB on the right two pins.
Test each button. If the PSB does not work, check to make sure it is plugged into the correct pins.
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