imac 21.5 Core i3 mid 2010 - how many SATA ports available? I've been looking to upgrade to an SSD.

And I've read a couple of options:


Swapping the mechanical drive for an SSD.
Swapping the optical drive for an SSD.


My question is, is there another SATA port available on the motherboard that could be used to insert an SSD, possibly behind the existing optical drive, so you could have a total of three drives?

And is there physical space to do so?

I'd ideally have the SSD as the boot drive, the old mechanical for data, and the optical to watch the occasional film.

This post suggests that there is room in the 2011 imac 21.5 inch: https://apple.stackexchange.com/a/38040/358026
Is it still applicable here?
That model does not support SSD and HDD in addition to the optical


https://everymac.com/systems/apple/imac/specs/imac-core-i3-3.06-21-inch-aluminum-mid-2010-specs.html


The 27” from 2010 does, however. It just needs a mounting bracket and the SSD. It’s SATA 3 Gbps bus and this link has lots of upgrade referrals:


https://everymac.com/systems/apple/imac/specs/imac-core-i5-2.8-27-inch-aluminum-mid-2010-specs.html


You’d want to get a hybrid SSD/HDD drive if you needed size and space on the 21” unfortunately.

Your mac would need to move the Optical external and put the SSD in place of the optical slot if you chose to retain a full size HDD.


https://www.ifixit.com/Guide/Installing+iMac+Intel+21.5-Inch+EMC+2389+Dual+Drive/8643