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What is the difference between USB2.0/1.1
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Are you asking: what is the difference between 12 Mbps (mega (millions) of bits per second) and 480 Mbps?
If so, then about 468 Mbps, or 40x.
Of course, the real world hasn't seen results near those theoretical limits yet.
As for the actual pin out, the pins are the same.
Far beyond what anyone needs to know is at http://www.usbman.com
Many want to ask if their machine has USB 2.0. I find it this simple. USB 2.0 is a PRIZED FEATURE and if your machine had it, they surely list it as HIGHSPEED USB or USB 2.0. If they just write "USB Port(s)" then I've been right every time that it was USB 1.1.
And DO NOT pay a premium for this if you don't have it. My last USB 2.0 4 or 5 port PCI card was all of 9.95 US bucks from compgeeks.
Bob
Except that with my Sony Vaio 2001 model year computer, an add-on pci with five usb 2.0 ports continually crashed my system, and created horrible digital artifacts with my usb audio. I recommend that if you are using usb audio stay with your "built-in" usb ports even if they're 1.1 because there can be major conflicts with the motherboard and bios, which you experience pops and clicks that are very annoying. I also had freezing on images on my webcam.
After three upgrade cards I realized that it wouldn't work with usb audio,or webcams, but did work with the printer, but that isn't worth the problems that occured with my audio. I look forward to my next computer with build in usb 2.0 ports.
Be sure to use USBMAN to sniff out what was amiss with your USB 2.0 card addon.
For me, I only see this on machines that are missing a driver, infested with parasites (hint: Antivirus doesn't do these) and other reasons. It may be worth the work to get it to go. It was for me!
Bob
My machine specs:
Home built with Shuttle main board with 6 USB-2 ports, AMD 2600+ XP processor, 512 Meg RAM.
Optical drive: Sony 52/32/52 CD burner.
Drive case: BYTECC USB-2.
Procedure: Copy a large file from the USB drive to a folder on my HD. I used the supplied USB-2 cable that came with the case and a several year old USB-1 cable from an older USB Zip-100 drive.
File copied: IE6 full, 48 Meg in size from a CD-RW disk that I had burned a while back.
Results:
USB-1 cable took 25 seconds.
USB-2 cable took 19 seconds.
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