ReadyNAS 424 UPS compatibility.

[drsox]

I was using APC RS 1500 UPSs with my 2x ReadyNas 424 (there are a hold-over from the Pro6 units I used to have).  They have always been incompatible with the 424s (can't use the auto-shutdown etc).

One of the UPSs has now failed and I would prefer to find a model that is compatible (can't find a list anywhere).

Any suggestions or, better still, point me to the official list.  APC preferred as I have used them w/o issues for 10 years or so.

Thanks.

[StephenB]

There is no list here.  

The NUTS folks do have one here: https://networkupstools.org/stable-hcl.html

Models with USB output should be compatible though.