THE CORE V1 INTERIOR
Behind the fascia Thermaltake has placed an 200mm intake fan which you can replace either with an 120/140mm fan or with an 140/240mm radiator (not all 240mm radiators fit however).
The interior is quite spacious for an mini ITX case but what really matters is that you can swap panels and you can even move the mainboard tray with the rear to mount the mainboard vertically (we didn't try that feature in the end but according to TT it's not very hard to do).
Here you can see the space where you should be able to install a 240mm radiator (you may have to swap the stock fans for something thinner).
There are two metal vertical trays placed on the other side of the case where you can mount two 2.5/3.5" drives.
As you can all see the mainboard tray comes with 4 steel standoffs so you can go ahead and place the mainboard on them.
The PSU area will not fit the largest PSUs with ease but it's more than enough for normal sized ATX models.