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I purchased 6 of these in 2007; all were ~DOA. All ports recognized USB devices, but each card had exactly one port that would read an entire thumb drive without it disappearing. I tried several brands of flash drives; none would work on other ports for long.
Running an old Dell Dimension 3000 and I needed to get some more USB ports. Threw this in and runs like a charm. Although if you have a external hard drive hooked up, make sure it's hooked to a USB directly to the motherboard, makes a difference in how fast it can access it from idle mode.
Worked flawlessly. I have a couple of old Compaq Presario 6000s (from 2003) running on AMD CPUs. I installed the 2.0 cards so I could run some new peripherals. I can't say anything about bench marks, but the ease of installation combined with the price made them 5 stars to me. http://www.amazon.com/gp/product/B0002M4HU0/ref=cm_cr_rev_prod_title
Unfortunately, this is the slowest USB 2.0 interface I've ever used. This card works well with both my 32-bit Windows XP and 64-bit Windows OS. I'm a computer veteran of 29 years. My fastest USB Flash drives (the 8GB Kingston HyperX and 64GB Patriot Magnum), which normally give read speeds of around 33mbps, test out at 8mbps tops with this card. It uses the standard Windows drivers. However, I was seeing slow transfers, so I tested my drives using HD Tune 2.55 (free download - amazing utility). This is just barely out of USB 1.0 territory, and no where near the speed of any of the other interfaces I've used. You get what you pay for here I'm afraid.
Installed in XP computer. Instantly detected, no additional setup/drivers required. Device Manager immediately went from USB Device to USB 2.0 Device. Sweet.
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