I've got a late 2013 27" iMac that has a 512GB SSD in it. I'd like to add a regular SATA to it for more internal storage. I've watched videos on OWC for both upgrading the SSD and/or the SATA drive and I'm comfortable with it. However, since my iMac never had a regular SATA drive in it, will the components I need to connect one be there when I open it up? Is there already a bracket and SATA connector for when I try to put the 3.5" drive in it? Just curious if anyone here has done it as I'm going to add a 4TB drive to it if it's possible. I love the speed of the SSD but I miss the storage of the SATA and I'm tired of always having externals connected. Any input is greatly appreciated. Thanks!