USB 3.0 card = USB 2.0 speed? - AVS Forum
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post #1 of 16 Old 05-02-2013, 07:34 PM - Thread Starter
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I have a Rosewill RC-505 PCIe USB 3.0 card installed in the first available PCIe x1 slot. The card performing at USB 3.0 speeds for months, but then one day I noticed that my USB 3.0 devices suddenly started operating at USB 2.0 speed. When I plugged in a USB 3.0 thumb drive into the card, I received a warning bubble saying "your device will perform faster in a USB 3.0 port". I did the following:

--Rebooted the system
--Re-seated the 4-pin Molex power connector on the card
--Replaced the card with an identical card

None of the above worked. I moved the (replacement) card from the first available PCIe slot to the second available PCIe slot. No more warning bubbles and file transfers are back to USB 3.0 speed! So I guess there is an issue with the first PCIe slot. Is that possible? The USB3.0 card was detected by Windows 7 64-bit fine when it was installed in the first PCIe slot; the only issue was transfer speed.

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post #2 of 16 Old 05-04-2013, 07:33 PM
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What speed is that PCI-E slot? Maybe the USB 3.0 card requires a certain speed? I'd check into that first thing.
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post #3 of 16 Old 05-04-2013, 07:55 PM
 
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First off, you did not state what Operating System you are using. Second, need to know if this a computer you or someone built for you, what is the motherboard model# and make if custom built, or if it is a off the shelf OEM system, what make & model# of the OEM system.

If I had to guess, a driver is the problem here. How many USB devices do you have hooked up to the card total?
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post #4 of 16 Old 05-05-2013, 10:05 AM - Thread Starter
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Thanks for the replies. I custom built this system myself. The motherboard is a Gigabyte GA-EP45-UD3R. The OS is Windows 7 64-bit.

To clarify my original post, the USB 3.0 card was installed in the first available PCIe x1 slot and was performing at USB 3.0 speeds for months. One day, I connected a USB 3.0 thumb drive and received a warning bubble about "this device will perform faster in a USB 3.0 controller". I did a file transfer and the transfer speed was in the 2.0 range. I also received the same warning when I connected my external hard drive which is USB 3.0.

As of now, I have a replacement USB 3.0 card in the second PCIe x1 slot and it's working fine. Is it possible the first PCIe x1 slot is malfunctioning?

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post #5 of 16 Old 05-05-2013, 10:54 AM
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What chipset is that card? If it's the NEC/Renesys chipset, I'd recommend you throw it out and buy something else - I've seen nothing but problems with their chipset. Aside from that, make sure the card has the latest firmware/drivers

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post #6 of 16 Old 05-06-2013, 06:58 PM - Thread Starter
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The Rosewill RC-505 card uses a Renesys chipset. If I have any more trouble, I'll replace the card. Can you recommend an alternative?

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post #7 of 16 Old 05-06-2013, 07:21 PM
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Any other chipset. I've constantly seen problems (mostly with USB 2.0 backwards compatibility, but they have been so prevalent with it that I wouldn't trust it) with it.

Also, at the risk of asking a stupid question - you are using a USB 3.0 cable, aren't you? They are not the same as USB 2.0.

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post #8 of 16 Old 05-06-2013, 08:21 PM - Thread Starter
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Yep, the cable has blue ends! I also ruled out cable issues by plugging the USB 3.0 thumb drive directly into the card; the warning bubble still appeared. The card is working fine now in the second PCIe x1 slot so I will leave it alone!

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post #9 of 16 Old 05-07-2013, 10:29 AM
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Sadly, this is common for USB 3.0 chipsets right now. The drivers just don't work well with the Windows OS. The next version of Windows and the upcoming USB 3.0 revision next year are supposed to make things more uniform across the board.
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post #10 of 16 Old 05-19-2013, 08:34 PM - Thread Starter
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Well, my USB 3.0 card is running at 2.0 speed again! That's too bad about the USB 3.0 chipsets. Although, out of curiosity, I would like to try another card. I'm considering the one by SilverstoneTek which uses an NEC chipset.

http://www.silverstonetek.com/product.php?pid=364&area=en

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post #11 of 16 Old 05-19-2013, 09:50 PM
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Quote:
Originally Posted by Scallica View Post

Well, my USB 3.0 card is running at 2.0 speed again! That's too bad about the USB 3.0 chipsets. Although, out of curiosity, I would like to try another card. I'm considering the one by SilverstoneTek which uses an NEC chipset.

http://www.silverstonetek.com/product.php?pid=364&area=en

That's the same thing - NEC spun off the division that makes the USB controller chips and it is called Renesys.

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post #12 of 16 Old 05-21-2013, 03:35 AM
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I have a 4 port usb3 card with via chipset and found it more reliable than two of my motherboards onboard nec based usb3 ports.
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post #13 of 16 Old 05-21-2013, 07:55 AM - Thread Starter
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Thanks. The HooToo USB 3.0 cards have a VIA VL800 chipset. I'll try it.

http://www.newegg.com/Product/Product.aspx?Item=9SIA1HD0K30935

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post #14 of 16 Old 05-22-2013, 04:59 PM
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Wouldn't you know I just bought a usb 3.0 card with an NEC chipset a couple about a month ago and am about to install it :P
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post #15 of 16 Old 05-23-2013, 04:08 AM
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I also have a sata 3 usb3 asus card with nec chipset it works quite well so you will probably be fine.I think a lot of the problems are compatabiity with usb3 chipsets in some ext hdd.
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post #16 of 16 Old 05-23-2013, 06:35 AM
 
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I also have an NEC chipset and it works with no problems - currently controlling two 4TB Seagate drives.
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