Very pleased with this card. Got it for free from Newegg along with a DIR-625 I picked up for another location. Following the 300Mbps connection sticky, it booted right up at 300 and has stayed connected for 24hrs to a DIR-655.
I would recommend D-Link to friends. I am very happy with my main D-Link house: DIR-655, 5 2205 Gb switches, multiple xbox, Tversity, VOIP, 7 PCs, couple of client WRT54Gs and HD streaming. Have been running the above network for 2 months and it is rock solid.