Pay is very low. You should expect to earn $14-16/hr. No overtime. Management and Human Resources doesn't care about their staff. You will be dealing with hardware replacement for the most part, very little exposure to system administration. Your manager will be absent 4 days out the week, and when he's there you won't hear much from him.
Don't expect a decent raise. Bonuses are not worth waiting for either. HR does their best each year to pick the worst (cheapest) benefit plan. For the most part you'll be doing work similar to a janitor.
You can expect to throw out trash, wipe coffee off of the floor, exterminate stink bugs, wash floors, etc. Also, during summer, their cooling system doesn't work, so they rotate people to spray water out of a hose onto their A/Cs till the temperatures cool down.
Like I said, there's very little room to learn anything to do with your field.
I will invite more ex coworkers to give a review as well. Thank you glassdoor for letting us share!