<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Fri, Mar 14, 2014 at 10:46 AM, Mike Perkins <span dir="ltr"><<a href="mailto:mikep@randomtraveller.org.uk" target="_blank">mikep@randomtraveller.org.uk</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 14/03/14 15:46, Karl Newman wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
I've had various problems with my USB IR receiver/blaster which the<br>
manufacturer claims to be a problem with the USB host interface (even<br>
though no other device has problems with it...). Their tech support<br>
recommended that I use a USB hub in between the receiver and motherboard.<br>
The problems were mostly mitigated when I upgraded the motherboard, but I<br>
still ran into occasional device lockups which required a reboot to revive<br>
(unplug/replug was not enough), but I re-installed the USB hub and it<br>
hasn't happened since. Might be something to consider if you're having USB<br>
receiver problems.<br>
<br>
</blockquote>
That sounds to me like a power problem - the manufacturer probably thinks that if you use a hub it will have a dedicated power supply rather than taking it from the motherboard.<br>
<br>
(This might mean that the device is taking more power than the standard allows. They aren't going to admit to that, are they?)<br>
<br>
You might find that a particular set of USB ports or headers on your motherboard can supply more power than other ports. Your motherboard manual may help you with this. Also, ensure that nothing else is using the motherboard port set you connect the receiver to, thus diluting the available power.<span class="HOEnZb"><font color="#888888"><br>
</font></span><br></blockquote></div><br>It's an unpowered hub, so if that were the case it should be making the problem worse. I think it's probably something with the signaling--levels or timing or something.<br>
<br></div><div class="gmail_extra">Karl<br></div></div>