Microsoft X18-81172-01 Bedienungsanleitung Seite 5

i1 Palm lift provides support and helps promote neutral wrist position.
i2 Detachable palm rest.
i3 Switch between Windows 8 hotkeys and F keys.
i4 Split spacebar with optional backspace
Helps improve typing speed by eliminating the reach to the Backspace
key.
To use the Left spacebar as a Backspace key, press and hold the Left
spacebar and the Right spacebar for 3 seconds. An LED in the upper
to remove the Backspace key from the Left spacebar.
microsoft.com/hardware/support