I have a lava setup and right now running two single instance servers. These are pretty high end servers are handling 4-5 Android devices over USB 

I need to expand that to multi node setup with maximum DUTs connected to one dispatcher. 

The target is only to have android DUTs so that implies a very stable USB hub and stack on the dispatcher machines.

I used a couple of off the shelf desktops in the past and the USB stack could not handle more than 1 device at a time.

Any suggestions for hardware that is proven to be solid for dispatchers.

Thanks
Sandeep