You're watching a EPROM with the last OS (2.0) for the fabulous Novation Supernova II keyboard or rack version (select the appropriate). The new OS offers many new sound-creating features and operational improvements as well as fixing all known 'bugs' present in previous versions.
No rocket science to install it: power off the keyboard, remove old EPROM, install the new EPROM, power on again and wait until the system does all the work for you. Theoretically, you will keep all your sounds, but good practice requires a backup. I did this in several keyboards and never lost any sound.

I have sliding pots for most vintage gear, including most Korg, Yamaha and Kurzweil. Some rotary for older Moog (Micromoog) and Transcendent 2000. Also some switches and some SSM and Curtis (CEM) chips. I will be selling all these in the next few weeks. Contact if you are looking for something. I repair (and collect) synthesizers since 1992.

I will send worldwide (tracked) for free no matter the quantities. I'll post it same or next day, depending on payment hours. Some European customers had the product in less than 40 hours after payment, please check my feedback.