Many devices are picky about USB extensions. Some work ok at 20+ feet; others refuse to do anything with a single 10ft extension.
I've got to put this part in bold because it's quite important:
Don't run your wide format printer on a SOHO switch!
The average $50ish "Small Office / Home Office" switch can't handle the sustained traffic required by a large print job and they have a tendency to overheat and/or fail without warning. Even if it just "hiccups" in the middle of a job, you've got to throw out that print and start over.
It's a larger investment but you really need a beefier switch, something like
this one from NewEgg. It does Layer 2 routing onboard, meaning you get full gigabit speed to all ports simultaneously without involving your existing router at all. It's really the only way to reliably use a printer like that over the network. Plus, you get the added bonus of having true gigabit traffic in the entire office. I know you won't use most of the more advanced features it has but who knows what you may need in the future.
This is why most installers insist on adding a second network card to the computer and connecting it directly to the printer. If they're close to each other that might be the cheapest way to go. If the printer needs to be networked, you need the better switch.