gawminers intel controller with gridseed

[Edser]

I am having an issue getting more gridseeds on here. They do spit out an error that seems to be too many USB devices, but won't go past 32 gridseeds. The USB limit should be near 127 devices minus the USB hubs right?

Jun 11 01:57:51 gawminers kernel: [ 16.975059] cdc_acm 2-1.7.7.4.4.3:1.0:
This device cannot do calls on its own. It is not a modem.
Jun 11 01:57:51 gawminers kernel: [ 16.975071] cdc_acm 2-1.7.7.4.4.3:1.0:
no more free acm devices

Tried cycling the cmc_acm with no luck.
Not sure where to go from here.