With something like a UPS using some crummy non-documented protocol with Windows-only support, it really is 100% up to the vendor. The best Linux can do as an

With something like a UPS using some crummy non-documented protocol with Windows-only support, it really is 100% up to the vendor. The best Linux can do as an ecosystem is reverse-engineer some stuff, which may or may not work for all models for varying degrees of "work", and that's it. The people working on apcupsd probably don't even have access to this model, and they're probably also not keen to dish out several hundred Euro/Dollar/Pounds to purchase one at their own expense. Often things are complex and multiple people are "at fault" for something going wrong. Sometimes it's very simple and it's just one party doing something wrong. This is one of those simple cases. Linux is very much not "the problem", crummy vendors with crummy undocumented protocols are "the problem".