The onboard USB3.0 on my ASUS P8H67-M I under Win7-64 around the straining not get up and running. Despite forums tips and various drivers up and downgrades. The DeLock 89315 reingesteckt, launched install program and everything was good. The usual way via HW-detection does not work übrigends. Data rate USB3.0 -> SSD was around 98MB / Sec. for large files.
Even under WinXP gabs no problems. Again, full USB3.0 Data rate.
Criticism of the short slot bracket I can not confirm. For me, the card fits perfectly into the case. So strong buy recommendation. Been surpised quite as exuberant of a product!