From the top menu toolbar in FL Studio, choose Options > File Settings.

If you have difficulty locating a plugin within the FL Studio software, be sure Cubase is reading plugins from the correct location where your plugins are installed. Also, to ensure synchronization for functions such as the Arpeggiator, click on the box next to Send master sync and ensure Synchronization type: is set to MIDI clock.

In the window that opens, choose the VI series keyboard under Output, choose the VI keyboard under Input, and click on the box next to Enable as shown in the image below.

From the top menu, choose Options > MIDI Settings.

This articles walks through how to setup the VI series controller with FL Studio. With velocity-sensitive semi-weighted keys with aftertouch and Octave Up/Down buttons, you can expand the keyboard to the full melodic range and play bass lines, chords, and melodies. The Alesis VI series is an advanced USB/MIDI keyboard MIDI controller that lets you take command of your music software with a series of pads, knobs, and buttons.

Connect midi keyboard to fl studio 12