During M-Audio's testing with various chipset for the FireWire 410 they encountered a problem that only occurs when running the FireWire 410 on bus power, should the device be detached from the computer while it is on and then re-attached, (this is known as Hot-Plugging), normal operation of clean audio would not occur. Only after a system restart would normal audio resume. This was found to be a specific problem with how the NEC Chipset negotiates the re-initialization of a 1394 bus powered device while the computer is powered on.

Source of the Problem:

M-Audio Testing Department found this error with several revisions of the NEC 1394 chipset.

Workaround:
When the supplied 12VDC power adaptor powers the FireWire 410, this problem does not occur.

For Bus Power Operation where hot-plugging the FireWire 410 will be commonplace, we suggest using a chipset found on the certified 1394 Firewire PCI adaptor card compatibility chart located here (highlight “here” with link to chart). PCMCIA users click here (link to PCMCIA document with “here” as the hyperlink)