If you have a 620 its EASY to use a PLASTIC ruler and check.
12 INCH CARDS and even 10 inch CARDS WILL NOT FIT.
Some that are close to 10 with the AUX power going in from the top instead of the back
will work.
Now you could Hack out the hard drive bays and store a hard drive in the 5.25 inch bay via a drive drawer or
3.5 to 5.25 inch adapter bay. In that case a 12 inch card might barely fit.
