That printer is made by Lexmark. The cart is #82 Black and #83 color, however, they will not fit your printer as the have a different top.
You have three alternatives - modify your printer to accept both Dell and Lexmark carts as I have, or refill the carts with ink for lex 82 & 83s, or cut the tops off your Dell carts and switch them with The Lex 83 & 83 carts.
Have A960 Dell printer that works fine. But....
Where can "you" get good prices for the cartridges (?) as they are expensive. Who makes the printer for Dell?