Oh no, the computers are Dell 6430u and two E7440, only have USB3 ports and are super low power consumption compared to what I have that's USB 2.  So I wonder if I could uninstall the USB3 chipset drivers or somehow disable USB3 and get it to work, or is it more down to the hardware level?

This E7440 only uses 5w when the display isn't lit (compared to a E6410 at 18w that's running 18 block erupters) and I'd really like to use it for the BFL and 18 block erupters.  I'm using cgminer 3.1.1 on that 6410 with USB3 hubs (it's a USB2 computer) using the //com/ switches but like I said I'd love to move over to the 7440.  Is there a version of cgminer that will run the BFL and BEs using the com ports?  (Or better yet if I could kill USB3 on the 7440 and make the winusb way work with a new version)


And finally, I know you are the one behind cgminer so what are the reasons I want to be running it vs bfgminer?  I've read something about it using less CPU to do the same hashing so if that's true will that save me power and what are any other advantages?