VANTEC 2-Port SuperSpeed USB 3.0 PCI-e Host Card Model UGT-PC312 Renesas/NEC Chip

Pros: Works great, got a WD usb 3 external hooked to it, use manufacturer latest driver , not cd drivers.... forgot the benchmarks I did when I first Got it but remember it was inline with usb 3 benchmarks

Win 7 64bit

Cons: wasn't 4 port LOL

Pros: There is a huge difference in USB 3 speeds and reliability that depends on the chip sets used and the quality of the drivers. I have had good luck in the past with the NEC chip set that this card uses.

When I first installed this I used the drivers (for Windows 7 64 bit) that came on the supplied disk. When I started using this adapter I was getting only 60 meg/sec reads and 30 meg/sec writes on drives that I knew ran faster on my other desktop that uses an onboard Eton chip set. This is definitely USB 3 speed but I was getting 20 to 30 meg/sec faster on my Eton chip set.

I went online to the Vantec Web site and downloaded the latest drivers and my transfer speeds jumped dramatically. I now get 80 to 90 meg/sec reads from those same drives which is what I was expecting.

Comes with a power adapter cable (molex to sata) that I did not need but nice to have. You need to plug in a power supply cable of some kind to this card to supply the higher amperage that USB 3 devices demand (especially on non AC powered drives). My power supply had plenty of molex connectors.

Cons: Supplied drivers on the disk are slow. Get the latest from the web site.

Other Thoughts: Good price. Quality seems fine. I would recommend this to others.

Be careful plugging in the molex cable on this card. Hold the back of the on board connector with your thumb when plugging in so that you don't bend or break that connector. Lot's of cards have this problem but just be careful and you won't have any difficulties.

Pros: Works either with generic Win8 driver or with its own from Vantec's page (CD included has up to win7 drivers). Extra power is needed, sata-to-molex cable included.
Small, fitted below video card PCI-E where, if it was bigger, would obstruct the VC fan.

Cons: It does Not work with VMware workstation 9-812388 and below; VMw states you need to use generic MS driver but this card won't. Devices attached on it cannot be loaded inside VMs.

After about a week it stopped working (yellow exclamation mark in devmgr). Reboot didn't help. Power off for a minute, started working. Updated firmware, works fine for the past 3 days. Will monitor.

Other Thoughts: usb2 MBps usb3MBps
SATA 5400 rpm 29 43
SSD samsg 830 29 86

Waay below usb 3.0 specs huh? I wonder if Intel's Renesas is faster?

A usb3 card reader provides the max transfer speed of your card model. e.g. 16GB Class 10 SDXC copies with 10MBps (+/- .8MBps)

Pros: Another Excellent product as usual from Vantec, I have help a friend install this card for about a month ago. Simple design, connect the power adapter to the PSU and card into the slot, boot up, ask for drivers, get the latest drivers from Vantec website and is up and running. The Renesas/NEC chipset is the best and most stable USB 3.0 chipset around.

Cons: None

Pros: Gives USB 3.0 speeds to your non usb 3.0 machine. Easy install.

Cons: None that I've run into.

Pros: While it worked, after the first boot, I clocked the HDD in the USB3.0 enclosure at 100MB/s.

Cons: Then, 10-15 later the computer shut off and at boot, I won't past the code 25 (Shadow Bios). The motherboard is EVGA nForce 750i. Could be just an incompatibility with my MB, but I pulled out everything else from the MB (video cards 2xGTX570, ram chips, disconnected all SATA drives, etc). The MB won't POST with the card in ... and will without.

Other Thoughts: I'll ask NewEgg for a replacement, ... I give it 50% chance it's broken, 50% that just won't work my MB.