Laptop Modems

Socket end

Top side

Underside

Mounting bits

Five (5) total
These are INTERNAL LAPTOP MODEMS! Not desktop modems. The pictures above show everything I know about them.
Model number on one of the chips is CS524FM which makes me think they're 2400 baud.
The FCC ID is F2M4NGMHZC524FM
I suspect these are for a creme/white Compaq laptop, probably of the 486 vintage.