Akai MPK mini MIDI Controller Keyboard, 25-Key "ns series" Questions

Hi, I will buy a used Takamine EG340SC-NS but the gain button works backwards Hi, I will buy a used Takamine EG340SC-NS but the problem is that when i went to tested i notice that the gain button ...

...ns-series VGN-NS30E says i need driver software to use it. the keyboard works on my computer though (dell volstrom 220 mini tower), so i want to know why isnt it working on my laptop and would do i ...