An MX Keys key that fell off is not necessarily broken: in 30 to 40% of cases you can put it back without buying anything, provided the X-shaped hinge is intact. Typical scenario: the key partially unclips after cleaning, an impact or after dropping the keyboard, but the hinge stayed on the keyboard and everything is intact. If on the other hand the hinge fell with the key or broke on impact, you need to order a new hinge (€5 each) or a complete key (€8-15 depending on type).
Diagnostic
Pick up the fallen key and the hinge if it fell too. Inspect the X hinge: if it is intact (all four arms whole), you can reassemble without buying anything. If one or several arms are split or broken, order a new hinge. Also check on the keyboard that the four metal hooks where the hinge clips are not bent.
Méthode
- 1
Pick up the key and the X hinge (if also fallen).
- 2
If the hinge is intact, clip it onto the four metal hooks of the keyboard (two audible clicks).
- 3
If broken, order a universal MX Keys hinge (€5) before continuing.
- 4
Place the key on the hinge and press firmly at the center until the click.
FAQ
My key fell off but the hinge is still on the keyboard — what to do?
If the X hinge is still in place and intact, you do not need to buy anything. Just place the key on top and press firmly at the center — it re-clips with a single click. Verify the hinge is not broken before.
How do I know if the hinge is broken?
Examine the four X arms. If even one is split, chipped or bent, the key will not hold permanently. Better order a new hinge (€5) than fall again a week later.
Do all MX Keys keys use the same hinge?
Yes, except the spacebar which uses two and the K380 which has a different mechanism. The universal MX Keys hinge covers MX Keys, MX Keys S, Mini, for Mac, Business, Craft, K950 and Ergo K860.
An MX Keys key that fell off is not always a disaster: in 1 case out of 3, you put it back for free. Otherwise, €5 buys a new hinge.