Usb 2.0


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I've got a USB2 controller in my PC although I've not got any USB2 devices. To replace a dodgy controller on my motherboard.

I can tell you that USB1 stuff should work fine on the USB2 controller if that's an issue. I've had printers, mice and joysticks all working fine on it.

As far as I know some USB2 devices would be backwards compatible but not all.

I do know that there are USB2 CD writers that work on normal USB ports. But at very crippled speeds.

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USB 1.1 devices will work in USB 2.0 ports. My Logitech Camera is USB 1.1 and i plugged it into my USB 2.0 port on my Abit MAX AT7 and it works fine.

If you plug USB 2.0 devices in a 1.1 port then the device will be slowed to 11Mbps instead of using the 2.0 specification which is 480Mbps.

So finally.. you need a new controller (PCI card) to get USB 2.0 on your mobo or you need to upgrade your mobo to one that has USB 2.0 built in.

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While on the subject of USB2, I just discovered some really stupid and shady info. I saw something that said it used "USB 2.0 Full-Speed" and wondered what the heck that meant. Comes to find out that there are 3 levels of USB 2.0. Half speed @ 1.5 M bit/s, full speed @ 12M bit/s (i.e USB 1.1) and high speed @ 480M bit/s. Whats up with that. Seems to me it is for marketing purposes so companies can say their products are USB 2.0 compatible, leading consumers to think faster when that is not neccessarily the case. What a load of BS. OK, I've vented.:)

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USB 2.0 is backwards and forwards compatable with USB 1.1. In other words, USB 1.1 devices can be used in 1.1 or 2.0 ports, and 2.0 devices can be used in 1.1 and 2.0 ports. Using a 1.1 device in a 2.0 port wont give any extra bandwidth though. Using a usb 2.0 device on a usb 1.1 port wont give any more bandwith either.

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