Cerberus Mark 2 can have up to 64 targets

The exoskeleton and the lieutenant walked out of the Hot Zone and continued along the fence line. Cesar looked at some of the exes straining against the fence. There hadn’t been many when they’d arrived a few days earlier, but all the activity in the garden had attracted them. He winked, or thought of winking, and the armor’s targeting system came up with sixty-three targets. One shy of hitting its max. Dozens and dozens of red crosshairs filled his view. He swept them away with another thought.

Excerpt From Ex-Isle, pg 280
Peter Clines
https://books.apple.com/us/book/ex-isle/id989619017