Mine does not have nand installed. If you are good at soldering and have the right chip you might be able to mount it yourself (but again: good soldering skills and a steady hand is needed). Would have loved it if the nand was mounted standard Then again probably this would have brought the price up by 10 dollars or so.
PS: as I am already logged it, it would be nice if I do not have to enter a captcha on every post ....
Unluckly my soldering skills are not so skilled lol...
But i agree, with a nand on board, one of the opi uses may be as a big nas, with os in nand, 4 usb disks and 1 sata