This product came to quickly and neatly packeged. The instalation was very easy even in a small case and all the connectors where in factory perfect order (nice and tight). I bought this 550W to replace my original 300W power supply as I am looking to upgrade my video card to ATI Radeon HD 5770 1Gig DDR5. The power supply is quite light in comparison with the old one and has a very good air flow, with a big 12 cm fan at the bottom and if one was to put the hand behind the pc would feel a nice healthy flow of cold air. I would also like to say the level of noise is very low on this product and I would happily recomend it to you as an upgrade for a less able power supply, Happy Shoppin' :)