This includes everything you would need to upgrade from a (version1) 6 cassette to a (version 2) 8 cassette. I would love to see an option here for the savox servo, and in the future including prefabbed LED strips, but I really did have everything I needed and I installed all the extra features. Obviously I didn't solder the pixels but ordered them complete via Ali. I really like West3D. My new favorite stateside 3D printing hardware hub!