LMS Player settings reporting wrong player type

I own four Squeezebox Classics, all purchased at the same time. LMS Settings, in the Player section, reports three of these as Squeezebox Classics, and one as a Squeezebox2. All four players are at firmware level 137, and I am currently running off a completely fresh install of LMS 7.7.5 (because I had to completely reload my iMac, starting with a fresh install of Yosemite, for reasons unrelated to LMS). This situation existed even before the reinstall.

This doesn't seem to be causing any problems, but I'm curious why LMS would think that one of my Classics is a Squeezebox2?