Keyboards · Arturia
GarageBand plays the keys, but ignores most of the 9 knobs, 9 faders and 16 buttons on the Arturia KeyLab 49 MkII. KnobLink connects them: it recognises the KeyLab 49 MkII the moment you plug it in.
Also covers: KeyLab 61 MkII, KeyLab 88 MkII.
GarageBand plays the KeyLab 49 MkII's keys and pads, but ignores most of its knobs and faders. KnobLink connects those too: knobs move the instrument's Smart Controls, faders set track volume, transport buttons work.
No. KnobLink recognises the Arturia KeyLab 49 MkII by name when you plug it in and knows its factory settings. If you changed its settings, KnobLink asks you to move the changed controls once.
KnobLink is made for GarageBand. Logic Pro has its own controller assignments.