This has been bothering me for a while – finally I tried to find out about the reasons but couldn't find anything about this strange 'bug' yet – so I hope to get some advise from here.
I have an old iMac (Intel Core 2 Duo, 2,66 MHz early 2008, 4 GB Ram, OS X 10.6.8) that basically serves as a server – and as a digital VCR. And it has been a reliable work horse for years.
Since recently however whenever I try to get a signal on Delgato Stick (TV antenna via USB) the eyeTV app complains that the stick would not be connected through a USB 2.0 port. So it actually recognises the stick, but claims the port would not be fast enough.
For a while a combination of re-plugging and re-starting helped. Now I started digging deeper and found out, that the system profiler ("About this Mac") only finds two USB ports to be "USB high speed ports" while the other three are simply labeled "USB port".
The strange part is that I don't seem to have an influence on which two ports are "high speed ports". Today the port the keyboard is connected to and the port the iSight camera is connected to were labeled "USB high speed" –– which I find very strange. And after all – according to specs there should be five "high speed ports" available.
So – I hope somebody can maybe help me to understand what is going on? Is this a hardware issue – or maybe a 10.6.x bug? Any pointers would be appreciated.
PS: so far other devices (printer, scanner) have not been complaining – seem to be content with whatever USB port they're connected to.