Korg Trinity solo-tri installation question

Hi, I’m planning to purchase a Trinity 61keys and then upgrade it to a plus by installing a solo-tri board.

Would it need one to also purchase one or two brackets?
The solo-tri seller is selling with the thinner more internal bracket.
But then another seller elsewhere is suggesting I would also need a second bracket, the one with the scsi/port cutouts.

Lastly, how many extra screws would I need?

Per design, you’ll need both. However, i used only one and found it to be sufficient. The board is not heavy and i think if installed properly, one bracket with two screws is enough.

Also, you need to install OS 2.41. Won’t work with any other versions .

The OS can ONLY be installed using floppy disks. An emulator like Gotek won’t work.