I'm confused as to the purpose of the usb cable connection? Is this only used for VSTI, DXI or for synth plugins in BIAB?

I use a usb M-Audio 1 midi connection, with a usb flash drive, and the usb cable connected to a hub on my laptop, running Windows XP Home edition. I did check the registry and midi, midi 1 and midi 2 shows assigned, I would guess, as the appropriate drivers for those devices? (they aren't identified there as named and only show as driver/dll or sys)

One of my midi playback devices is the SC, and the another one is a Roland PMA-5 using a
Roland UM1 midi connection cable. They both show as *only* USB devices (Roland UM1 & M-Audio 1) and not as the SC or the PMA-5. I am unable to see the SC or the PMA-5 as selectable devices, but the SC does show in Sonar, as a selectable *instrument definition.* The PMA-5 also can show as an instrument def choice too, when that driver is loaded.

I believe at one point the SC did appear as a selectable "named" device, but not now? Am I missing something that is inhibiting it to show as such in BIAB or in any other program, for that matter? Keep in mind, the SC does playback/work from BIAB and the usb cable does *seem* to reflect or sound that it is connected, especially when it is
disconnected or UN-plugged?

Wrkinit (or not)