Matthew said:
oh and before someone says it... he doesn't want to use a hub if at all
possible...
A tray mounted device, could be a hub.
For example, this is a hub. One port comes in, four ports go out. So
this is a hub, packaged in a 5.25" tray mount. The chip on the PCB, is
what performs the hub operation.
http://images.highspeedbackbone.net/skuimages/large/C184-30564-main.jpg
This one on the other hand, looks to be just adapter cables. You
would need two 2x5 motherboard dual-port USB headers, to use one
like this, and have all the USB ports work. There is no chip on this
one, and no chip means it is not a hub architecture.
http://images17.newegg.com/is/image/newegg/13-999-355-S05?$S640W$
http://www.newegg.com/Product/Product.aspx?Item=N82E16813999355
http://www.silverstonetek.com/downloads/pindefine.jpg
You can get much the same thing (non-hub wire extension to front bay)
from here. This shows, effectively, how that Silverstonetek one works.
http://www.frontx.com/cpx108_2.html
The FrontX ones are modular, and you build your bay using modules.
It allows you to have a custom layout of connectors on the front
of the computer.
http://www.frontx.com/cpx088p2.gif
So if you can see pictures of them, detailed pictures, you can
kinda guess what type they are.
Modern motherboards can have as many as three 2x5 USB headers, providing
up to six USB ports. Older motherboards might not have as many of those,
and thus your options are more limited. In this picture, there are three
blue colored 2x5 USB2 pin headers, in the upper right hand corner. That
would be enough for 1.5 Silverstonetek bays.
http://images17.newegg.com/is/image/newegg/13-131-386-S03?$S640W$
The connector options on the USB bay, as also an issue. Some bay kits,
come with a real USB connector on the end, rather than a 1x5 or 2x5
pin header connector. To connect a bay with a real USB connector, and
keep it inside the computer, you'd use a PCI USB card.
For example, this PCI USB2 card, has a single USB2 connector for usage
inside the computer. You'd use that with a hub-type USB bay, to get four
ports. That means a regular USB2 cable, stretches from the bay, down
to that connector on the PCI USB2 card.
http://images17.newegg.com/is/image/newegg/15-104-216-S01?$S640W$
A bay with real USB connector on the inside of the computer, is
likely to be hub type.
HTH,
Paul