Last year I used an usb-surfstick for twitterwall in ventuz, and the computer crashed.
Ventuz-Dongle and surfstick canceled each other out. So, avoid to use other usb-devices beside ventuz-dongle if possible.
My solution is a cheap mobile wifi router from ALLNET, type ALL-WR2901-4G.
- 3G + 4G LTE
- 5200mAh batterie
- powerbankfunction for smartphone
and the nicest feature
- stable wired LAN connection through RJ45 with your ventuz-machine

I tested the router for 24/7 > ok!
The alternative is HUAWEI 5770, but not available in Europe.
greets,
stephan