After the spacebar, the Shift key is one of the hardest-working keys on the MX Keys. The left Shift is particularly stressed because it is used to type capitals, numbers (on keyboards without Caps Lock), and special characters. Over time the scissor hinge under the Shift key splits, and the key starts to tilt, jump or fall off. The MX Keys Shift key is classified as a modifier, sold individually with its hinge: €10.99 for the right Shift, €19.90 for the left. Two variants exist: left Shift (wider, 2.25 units) and right Shift (1.75 units), choose according to which one is broken.
Diagnosis
First identify which Shift is failing — left or right — as they are different sizes. If the key wobbles abnormally under pressure, the scissor is broken. If it no longer presses on one side, the hinge has lost one of its four anchor points. If it presses but no capital letter is typed, first check that Caps Lock is not inverted: a common false problem. Otherwise the membrane underneath may require disassembly.
How to fix it
- 1
Identify the broken Shift (left 2.25U or right 1.75U) and note your layout.
- 2
Lift the key vertically with a fingernail or plastic spudger.
- 3
If the scissor hinge is split, remove the fragments and clip the one supplied with the key.
- 4
Place the replacement Shift key on top and press firmly at the center until you hear the click.
FAQ
How do I know if I need a left or right Shift?
On MX Keys, left Shift is wider (2.25U) than right (1.75U). Check visually: left sits below Caps Lock, right is to the right of the / key.
Both my Shift keys are broken, do I need to order two?
Yes, they are physically two different parts. Our catalog offers both variants. Make sure to specify the layout (AZERTY, QWERTY, QWERTZ) for the correct printed character.
Is the Mac Shift different from the Windows Shift?
No, mechanically identical. Only the printed symbol may vary (Shift, ⇧). Choose your keyboard model (MX Keys, MX Keys for Mac) at order time.
A broken MX Keys Shift key is repaired in under a minute for €10.99 to €19.90. No specific tool, no keyboard restart required.