ちなみにホイールマウスのホイールにも対応しているんだ。

。

For what it's worth, it's also compatible with the wheel on a wheel mouse.

Literal

Incidentally wheel-mouse [gen-の] wheel [to-にも] is-responding [explanation-んだ].

対応する '(to) correspond to / support / be compatible with' is a technical-flavored verb widely used in computing contexts for software/hardware support. ちなみに 'incidentally / by the way' is the discourse marker introducing a tangential fact. ~にも '(to) X too' compound particle with the も adding 'even/also.'