Thread: USB 2.0 and ports on the PC
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Apr 1st, 2007 06:24 PM
#1
USB 2.0 and ports on the PC
My motherboard allows USB 2.0 and i've verified this through my device manager.
I have a memory card reader for my Compact Flash card and when I connect the card reader and transfer the files I find the speed is the exact same as it would be if I transfered the CF card still in my camera.
Are there only certain USB ports on my tower that allow 2.0? I have 4 available, 2 of which are on the side of the tower and two directly from the motherboard. Does it make a difference?
Thanks
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Apr 1st, 2007 07:27 PM
#2
How fast the transfer speed are you talking about here ? It could be the bottleneck is your CF card ...
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Apr 1st, 2007 08:38 PM
#3
What speed is your CF card?
What reader specifically?
What camera specifically?
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Apr 1st, 2007 08:41 PM
#4
On most older machines, it's only the rear motherboard ports that are USB 2.0. I know this is the case with my machine and the motherboard is about 2-3
years old.
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Apr 1st, 2007 08:41 PM
#5
1- 120x Cf Card
2- No name card reader from ebay (all in one type), but stated compatible up to 480mb/sec, verified with seller and compatible with my card.
3- Camera is a Canon Xt.
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Apr 1st, 2007 08:58 PM
#6
Both your camera and reader are probably USB 2.0 High Speed capable, so you shouldn't really see any difference in speed.
How long does it take you to move files?
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Apr 1st, 2007 09:15 PM
#7
600-700mb took around 3-4minutes.
I've never used usb 2.0 so I'm not sure if that is fast or not. But at 460mb/sec (as the product states), it should be done within seconds.
I will have to try the back port as well, but should this be an issue? my mobo is an Asus deluxe - 5years old.
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Apr 1st, 2007 09:19 PM
#8
the 480mbps is in megabits...
real world performance is commonly limited to a max of 30 megabytes per second... (that's what my research into webcams said anyways).
and for transfering from stuff such as flash cards? I have no idea where the bottleneck is...
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Apr 2nd, 2007 04:25 AM
#9

Originally Posted by
Xtreme2001
600-700mb took around 3-4minutes.
I've never used usb 2.0 so I'm not sure if that is fast or not. But at 460mb/sec (as the product states), it should be done within seconds.
I will have to try the back port as well, but should this be an issue? my mobo is an Asus deluxe - 5years old.
That is definitely slow. Use the back ports, as the ports on your CASE may not be 2.0 high speed.
FWIW, I use a Ritek 150x CF card with a cheap $6.99 reader from LED Shoppe and move roughly 1GB in 1min. Average around 12-15 MB/sec (translates to ~96-120Mbit/sec).
USB 2.0 theoretical maximum of 480Mbit/sec translates to 60Mbit/sec. You'll never get this number as it's theoretical max. Practical max is probably around half of 75% of that.
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