I see the case for the RB2011 has provision for an IEC socket at the rear, and mounting to take an internal power supply.
A 48v power pack with an IEC socket on a flylead would do the job.
Are these available anywhere ?
This would make it a “proper” rack mount solution.
could be nice for RM variant, but trick is how to keep it affordable, cuz such electricaly-safe [even]impulse PSU installation could take serious portion of case/enclosure. but could sold well, for sure.