This product is obviously positioned towards the budget end of graphics, which shouldn't put you off.
Any component should fit in the system you're buying it for, and if you are building a system with cost in mind, then this card is great value for money.
It's small, so if you are building a system without cavernous space inside, it will easily fit, the PCB isn't much longer than the PCIe slot, and the cooler doesn't extend this length any further.
It does take up two slots, though.
It draws all the power it needs from the slot, it doesn't have a 6pin PCIe power connector, so you can get away with a cheaper PSU.
The card doesn't get very hot even under load, so you won't need to add any cooling unless your system is close to overheating already.
Noise wise I can't even hear any difference after installing it, it's not a loud card.
It doesn't have any weird quirks, and will install just as easily as you'd expect for a PCIe graphics card.
Performance wise it's what you'd expect, it scores 7.4 for graphics/gaming graphics in the WEI on my system and will play pretty much any game currently released on my screen, which is higher than 720p but lower than 1080p.
Serial number is also on the box, not just on the back of the card.
tl;dr - Really good value for money, won't destroy your electricity bill, won't get very hot, won't make a lot of noise, and will get plenty of gaming done if you put it in a system built to a cost limit.
I recommend it.