bluetooth connectivity.

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Joined
20 May 2007
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159
thing this is in the correct area..

I have a htpc connected to 2 40" flat screens via hdmi (one in the living room and one in the kitchen/dining room)

For accessing the computer its done via a Logitech Bluetooth keyboard and mouse (MX5000 & MX1000 ) This comes with a usb bluetooth receiver...

In the living room (approx 3m away from the htpc) its perfect.

In the kitchen it just about works (its very very sluggish, keyboard is fine the mouse is struggling) if you move the mouse and nothing happens eventaully it will do all the mosue moves you did previously..

the kitchen/dining room is behind the living room (and not quite line of sight to the htpc (but bluetooth should work)


Can you get either :

1.a stronger bluetooth adaptor
2. a usb extension lead (approx 5m in lenght) (so that i can unplug the existing bluetooth adaptor and plug it into the kitchen or else get another bluetooth receiver)
3. plug another bluetooth receiver into the machine (can you run it with 2 bluetooth receivers??
 
This is the USB cable rule on length.

A plain ten metre extension cable is well over the five metre length limit for full speed USB (version 1 or 2); no such object should exist. USB leads don't work perfectly when they're 495 centimetres long and instantly stop entirely if they're 505cm, but you can't cure the problem by just using better wire; the limit has to do with signal timing, not cable loss. It's actually rather surprising that even one printer could be made to work on the end of that much cable.

To get more than five metres out of a USB lead you have to use at least two cables, and at least one of them has to be one of the more expensive repeater leads (think of them as one port hubs; hubs are repeaters too), not just a cheap dumb cable. Repeaters re-time the signal and reset the maximum cable length limit.

There is no such rule. You can actually daisy-chain up to five hubs or repeaters, provided you're not trying to run bus-powered devices and don't have enough power in the chain; in that case, you'd need a self-powered hub (with its own wall-wart power supply) on the end of the chain. Normal desktop printers have their own power supplies, so that's not going to be a problem here.

Oddly, USB devices that run at less than full speed (things like mouses and keyboards and such) can only have three metres of cable between repeaters. Full speed devices (USB 1.1 or USB 2.0) can have five metres.
 
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