Unlike most people on earth, i try to be as helpful as possible. In this case, i will provide info which would have aided me if the previous two reveiwers had thought to mention it.
Yes this product arrives with low profile brackets in the box. It has low profile brackets included. You do not not need to order low profile brackets for your case seperately. This product arrives with low profile brackets.
Also, it JUST about fits in the Dell C521 case, there's a heatsink on the motherboard which looks lke it's going to fight with the fan on the graphics card so im yet to see what happens, i think i can push the heat sink just a bit furthuer away couple of mm is all it needs. I'm still waiting for the replacement cpu.