what form factor is this dell 990 optiplex?

[detroitwillfall]

im trying to determine what parts are compatible(psu/gpu ect)

and im unsure if this is sff/mini atx/itx?

 

[delaro]

Looks like the Mini tower which is a Micro ATX.

Spec Sheet is here.
http://i.dell.com/sites/doccontent/shared-content/data-sheets/en/Documents/optiplex-990-spec-sheet.pdf

Here is a Pic
http://www.ebay.com/itm/Dell-Optiplex-990-MT-Intel-Desktop-Main-System-Board-Motherboard-LGA1155-DDR3-/122022639280?hash=item1c691db6b0:g:eLQAAOSwNuxXaY9Q

 

[detroitwillfall]

Looks like the Mini tower which is a Micro ATX.

Spec Sheet is here.
http://i.dell.com/sites/doccontent/shared-content/data-sheets/en/Documents/optiplex-990-spec-sheet.pdf

Here is a Pic
http://www.ebay.com/itm/Dell-Optiplex-990-MT-Intel-Desktop-Main-System-Board-Motherboard-LGA1155-DDR3-/122022639280?hash=item1c691db6b0:g:eLQAAOSwNuxXaY9Q

ty! was confused on the wording of "minitower" appreciate it!