If you trace the hoses you will find the accumulator is teed in to the loader boom lift cylinders. Yours looks like it has the manual valve. You can also get an electric in cab valve.
JD will be happy to sell you as many LSS as you want. Install instructions will recommend nitrogen charge psi for the accumulator (depending on anticipated loads). They are shipped uncharged.I put a bucket on the 2011 and tried this LSS feature out tonight.
Wow, holly cow that system really works.
‘By far the smoothest loader tractor I have ever ran.
Now I am wondering what that option cost to have added to the other 2014 5M. Or if it can be added to the other tractor. Wow, I am just very impressed with the LSS feature.