Can a 3.5" HDD fit in the floppy disk slot?

[Maximilian]

As above.

 

[Anubis]

Yes

 

[zagood]

yup. screw holes match up and everything.

 

[PremiumG]

yes, however, a lot of cases completely surround the floppy disk drive (meaning panels all around floppy) - and there's usually bad air flow around that area.

Be careful of the hard drive temperatures.