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Reply With Quote2 separate cables. Yes, you are correct, mixing usb devices will cause everything to work at the slowest speed.
Hello, I was just curious on what might be better. Im going to be installing the touch screen, the slim drive, and keyboard and the griffin volume knob up front with me. what would be better, running 2 independed 15ft usb 2.0 cables straight to the mobo for the lcd and slim drive and 1 non-powered 2.0 hub for the keyboard and griffin or just get like an 8-port, powered hub and hook everything up to it and have one cable going to the mobo. Im asking this cause i think i read some where that if u were to plug in a 1.1 usb device into a 2.0 hub and it makes the hub into a 1.1 and everything else plugged in will run at 1.1 speed. am i correct? thanks
2 separate cables. Yes, you are correct, mixing usb devices will cause everything to work at the slowest speed.
No idea where you pulled that from but thats a load of Bulls#"t, A usb2.0 hub will stay usb2.0 even if you plug usb 1.1 devices in...Originally Posted by peecee
it will only go to usb 1.1 if you port on your computer is usb1.1.
If your computer is usb 2.0 then devices should work at usb2.0 speeds if they are compatible, even with usb1.1 connected to the same hub.
However since there is only one cable connecting your usb hub to your pc, it means the data transfer rate is lowered if you are trying to transfer lots of data..e.g. copying music off an external hard drive, as the link has to share the bandwidth with other devices connected.
Hope that clarifies things
Regards
Andrew
Disclaimer: There could be devices out there the do downgrade their speed from usb2.0 to usb1.1 when you plug in 1.1 devices, however in my expereince i have not used or seen any such hubs.
- that made me chuckle!
but you are kind of right with your disclaimer.
the problem lies with hub design. I forget that the correct terms are but imagine a hub as having nodes for each port on it. some hubs just had one node that all ports - lets say 4 - attached too. This was not really a problem with old usb1.1 but later when usb2 came around it was. this is why hubs with separate nodes (not the right term i know) came about in the early usb2 days. this allows you to mix different usb speeds and not get limited to the lowest speed.
just make sure you have a usb2 hub for a start!
I pulled my information right from directions for each of the 4 hubs I have. Each one of them - 2 Belkins, a dlink and a no name - say the same thing in different words. The hub is a 2.0 hub, but if you plug a 1.1 device into it, it forces the hub to operate a 1.1 speeds for all devices between it and the computer.
belkin -
so was i correct to assume that if i plug in a 1.1 device into a 2.0 hub it will operate at that speed? maybe i can run just the slim drive since i know that it needs to run at full speed to play dvds. does the touch screen need to run at 2.0 or is 1.1 good enough?
It really depends. I just picked up a 7 port hub from usbgear.com today that, according to their tech support, supports multiple usb connections, and each connection has its own speed negotiated between the device and the computer. So be careful of the hub you purchase. It supposedly allows 1.1 and 2.0 connections to mix equally without affecting each other's speed.
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