Editing Talk:HHKB Professional (section)

==== Certain machines are unable to detect HHKB Pro 2 due to keyboard featuring USB hub and differences between HHKB Pro and HHKB Pro 2 for collectors ====
It is noted by a few HHKB Professional 2 owners that due to the keyboard boasting USB hub for easier connectivity with other USB related devices. This also may inhibit their compatibility with certain machines as a result. The culprit maybe to do with the USB ID being sent to the host machine which may render the keyboard unusable. HHKB Pro JP as well as HHKB Pro owners may not suffer this issue as their keyboards does not have USB hub.

On the following Geekhack forum thread, hasu has kindly pointed out the issue noted above along with a change in the sensor chip used on HHKB Professional versus HHKB Professional 2. This may become handy for collectors for instance:

* Geekhack forums - http://geekhack.org/index.php?topic=54993.msg1234202#msg1234202