I got it working!! Thank you!

Here's what I did:
cat /usr/lib/modules/usbserial.ko
about halfway through the file I found this line:
license=GPLdescription=USB Serial Driver coreauthor=Greg Kroah-Hartman <[email protected]>depends=usbcoreintree=Yvermagic=4.4.59+ SMP

Then I compared ...

I will update the drivers in broadwellnk packages tonight with 4.4.59+ SMP drivers, this is a known problem...
I think your device GoControl HUSBZB-1 Combo Stick use the CP210x drivers, but I have not tested this device on synology.
The UsbSerialDrivers package for arch-broadwellnk is updated and ...

Hi @jumbotroll,

I'm getting the following in my log:
[ 193.400079] usbcore: registered new interface driver usbserial
[ 193.426258] usbcore: registered new interface driver ftdi_sio
[ 193.434111] usbserial: USB Serial support registered for FTDI USB Serial Device
[ 193.511698] usbserial: version ...