Summary: Product should only be used if you need another SATA interface. The USB 3 works well for prior versions of USB (1,1.1,2) but not a good investment for that reason only, as there are very few applications requireing a v3 USB. The card operates somewhat hotter than I liked also.
Summary: I'm using this accessory with an Asus P6T7 motherboard, Windows 7 64-bit, and a Crucial RealSSD C300 256GB. It has the latest firmware and drivers. I'm surprised to find that, although the U3S6 increases the read speed almost across-the-board in the ATTO benchmark when compared to using the SATA2 ports built into the motherboard, it also LOWERS the write speed in every single test!
Asus U3S6 True USB 3.0 & True SATA 6Gb/s Support Motherboard
Ascela R. Dominguez "hazelrd", Amazon
29 October 2010
Summary: Product description should contain incompatibility warnings. This product has compatibility problems and will not work with all systems and motherboards. I really wanted this product to work, what with its great product description and described abilities. However, it crashed my system twice and was not recognized by my PCIe x 16 slot. I was not able to test its abilities due to above issues.
Summary: This card fits into PCIEx4 through PCIEx16 slots -if you only have one of those, it may be intended for use with a graphics card exclusively. Such is the case with my Asus(!) P5Q-EM motherboard and onboard VGA. Once the card is seated, there is no video output, despite setting 'IDG' (internal graphics device) in the BIOS before. I also found that the card becomes hot quickly, even with nothing connected.
Summary: Physically installed it on a game machine (Asus P6T Deluxe) then plugged in a couple of USB game peripherals - booted up with no issues; however the game controllers did not work - moved them to the old onboard USB connections and everything was fine. Have not had the time and/or inclination to trouble shoot the USB issue. The "planned" SATA 6GB/s disk is on hold for a bit - so do not know about whether that portion of the card works either.
Excerpt: se branche uniquement sur un port pci express 4x !! si votre carte mère n'a pas ce type de port (plus grand que les courants 1x) vous devrez consommer le port 'graphique' ....... et sur les cartes mères peu chères, on ne trouve souvent qu'un port 16x.... bref, cette carte ne servira qu'à upgrader un pc un poil ancien garni d'une carte mère assez haut de gamme. par exemple une asus M3 ou M4 haut de gamme, pour leur offrir le sata 3 et l'usb 3. et brancher un ssd !!!