North-Facing vs South-Facing Keyboard Switches: Does Orientation Matter?

Switch orientation can matter if you want to use certain Cherry-profile keycaps: some north-facing builds can cause the keycap to touch the switch housing before the switch bottoms out. But north-facing does not automatically mean incompatible. The result depends on the specific PCB, switch and keycap, so check the combination you plan to use rather than relying on orientation alone.

What do north-facing and south-facing mean?

The terms describe which way the switch’s LED opening faces on the PCB. North-facing LEDs point towards the top edge of the keyboard, usually the number row; south-facing LEDs point towards the spacebar and the typist. The direction is about the switch’s position on the board—not a different switch type.

Orientation can affect how light shines through some keycaps, but the compatibility question most often raised is physical clearance between north-facing switches and certain Cherry-profile keycaps. The switch housing, not the LED itself, is what may make contact with the underside of a cap.

Why can north-facing switches interfere with Cherry-profile keycaps?

Cherry profile is a sculpted keycap profile: the rows have different shapes and heights. With some north-facing PCB and switch combinations, part of a keycap’s underside can meet the switch’s upper housing as the key is pressed. If contact happens before the switch reaches its normal bottom-out, the key can feel or sound different from the surrounding keys.

That is a possibility, not a rule for every north-facing board. The clearance can vary with the shape of the switch housing, the keycap’s underside and the row being tested. Advice from keycap makers reflects this variation: Cerakey warns about north-facing interference for its Cherry-profile caps, while Akko says its own Cherry-profile caps can fit its north-facing boards. Those are product-specific statements, not guarantees for other combinations.

For more detail, see Cerakey’s guidance on north-facing interference and Akko’s compatibility note for its Cherry-profile keycaps. Neither statement confirms how an untested PCB, switch and keycap set will behave together.

How to check your keyboard and keycaps

A product listing or manufacturer’s compatibility guidance is a good first check. If it does not answer your question, test the exact parts together before fitting a full set. A test on a different switch or keycap set may not predict the result for yours.

1. Identify the board’s orientation. If you can see the PCB or switch LEDs safely, check which edge they face. If the keyboard is assembled, look for a clear manufacturer specification rather than assuming from the board’s appearance.

2. Check the exact parts. Note the keyboard or PCB model, switch model and keycap set. Confirm that the switches are compatible with the board in the first place; switch orientation does not establish electrical or mechanical compatibility.

3. Try a keycap in the row you intend to use. If possible, use the actual switch and cap. Press the cap gently and evenly, checking for unusual resistance or a stop before the switch’s normal bottom-out. Pay particular attention to sculpted rows, but check other rows too.

4. Look for signs of contact. Remove the cap and inspect its underside and the switch housing for rubbing marks. If anything feels or sounds different, do not force the key; check the cap maker’s guidance or try a confirmed-compatible combination.

This is a check for your particular combination, not proof that every cap in a set—or every switch on the board—will behave the same way. This article does not document a hands-on test of a specific PCB, switch and keycap set, so it cannot confirm compatibility for a particular product.

Does orientation matter when choosing a keyboard or keycaps?

If Cherry-profile keycaps are a priority, south-facing LEDs are often a useful detail to look for because they reduce the risk of this particular clearance issue. They are not a guarantee that every cap will fit, and a north-facing board is not automatically ruled out. Confirm the exact combination with the keyboard or keycap manufacturer, or test it before committing to a full build.

When comparing switches, orientation is only one part of the build. Creamy Keyboard’s mechanical keyboard switch database lets you search switches and narrow options using available specifications such as switch type, actuation force, travel, silent status and factory lubrication. Use it to shortlist switches by feel and specification, then verify that your chosen switch and keycaps suit your particular board.