View Full Version : USB 2.0 and ports on the PC
Xtreme2001
Apr 1st, 2007, 07:24 PM
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
willy
Apr 1st, 2007, 08:27 PM
How fast the transfer speed are you talking about here ? It could be the bottleneck is your CF card ...
goofball
Apr 1st, 2007, 09:38 PM
What speed is your CF card?
What reader specifically?
What camera specifically?
Codegen
Apr 1st, 2007, 09:41 PM
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.
Xtreme2001
Apr 1st, 2007, 09:41 PM
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.
goofball
Apr 1st, 2007, 09:58 PM
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?
Xtreme2001
Apr 1st, 2007, 10:15 PM
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.
Icedawn
Apr 1st, 2007, 10:19 PM
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...
goofball
Apr 2nd, 2007, 05:25 AM
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.