Wireless mouse.  

Yes a wireless mouse will work fine you plug the usb port into the back and the mouse may or may not need batteries some of them do.

There nice to have.

It is a long time since wireless mice were unrealiable, and today they are an essential piece of equipment in my opinion.
I have 2 wireless mice, one for the desktop and one for the laptop. If either of them ceased to work then I would use a USB mouse until the weekend and then buy a new wireless one.

Yes it is very nice to have a wireless one. There is no wire and you can use it even in a some distance without worrying pulling your wire. I do have a wireless mouse and keyboard and i can bring my mouse a far distance from my computer. The only thing i don't want is the battery i do always charge them so when charging i used my ordinary then.

wireless mouse is wonderful,but you have to charge for it.it's very convenient for me to watch moive by lieing on the bed.

I recommend buying a Microsoft brand wireless mouse. I found they work the best. I used to have one until I broke it (it was in my backpack and I dropped it in a parking lot, landed on my mouse and it broke!)

A couple months ago, I bought a cheap wireless mouse. It's not a well know brand, but it was cheap! Well, I don't like that mouse very much. I have to change the batteries once a week! So, I've been using rechargeable batteries which only last like 5 days.

When I had my Microsoft mouse, I only changed the batteries a couple time a year! It was a lot better! i just bought a new Microsoft mouse yesterday, and I can't wait for it to arrive!

Nowadays, every gadget and devices come in wireless features just like the mouse. It works fine for up until now. I haven't encountered any issues from it and it didn't give of any headaches at all. Be sure to purchase a good quality one.