Braiins has a pool and software. Braiins pool is the mining pool. And Braiins os+ is the auto tuning mining software that can be installed on your miner in order to make it more efficient and you can do things like under locking to reduce the hashing power but also the electricity usage and noise.

When you buy from kaboomracks you can ask them to install Braiins os+ for you. It’s compatible with s9, s19, s19xp,… it’s particularly useful if you’re going to use braiins pool as you won’t pay fees on your mining rewards (if you have Braiins os+ installed)