Yes, that is a suitable UPS for a Mac Pro.
Firstly it is a Pure Sine Wave UPS which the modern Mac Pros need (rather than the cheaper Stepped Sine Wave models). Secondly 1500VA is a good size for a 2010 MP and monitor and should give a decent running time if power goes out.
A few things to be aware of with UPS boxes in general...
Do NOT attach a laser printer to them. The initial power draw when switching on a laser printer is too high and will trip the UPS.
Attach heavy use items such as the Mac Pro box and the monitor directly to the back of the UPS. There should be a couple of suitable cables provided with the UPS. In the UK, however, we have to buy the double-ended "kettle lead" cables since our mains plugs are different from the US).
For low power items such as routers, USB hubs etc that may have a transformer block, plug those into a standard 4-way adapter and put the adapter into one of the sockets on the UPS. You may have to change the plug on the end.
As for software, you do not need to use any to get it to work on the Mac. OS X recognises modern UPSs as soon as you use one. There should be a USB cable from the UPS to the Mac Pro. OSX will get all it needs to know via that cable - no software needed.
Now, about the price - that UPS is CHEAP for that capacity. Cheap is not always good. You may want to compare the price and features of the APC Smart-UPS 1000VA and 1500VA. You can find them at APC.com in the small/medium Business range under Smart-UPS. You do NOT want to use the cheaper Back-UPS models as they are not Pure Sine Wave.
All UPS models will hum and click when charging the battery but will be almost silent in regular use when on mains power.
EDIT : I personally use an APC Smart-UPS 1000VA on my 2010 3.33 Mac Pro and have had about two years of flawless service out of it. It has not had to deal with any long power outages but has protected me well from the odd dip or short power out. The APC models will track their battery health for you and report when they need changing.
If you have an old UPS of any model or manufacturer, APC offer their Trade-UPS trade in programme off their new models.