The possible problem with that is.. said genralization includes ALL Radeon R7 cards from 240 to 260x
All in all, they (240) should have DVI, HDMI and VGA. Display port didn't really appear until higher models (260) making exact model number even more important if you want that.
240's also need no separate power supply while 260's need it.
Biggest problem is the generalization of card type, 240's are pretty weak, 260's are lot better, by like 200%