Optiplex GX270 monitor support

Hello all, I was looking at inputs and noticed the video and some other inputs.  I was wondering, one of the inputs looks large enough to take another monitor plugged in.  For all I know, this computer is still stock, except for additional ram, and upgrade vid card.  So I was just wondering if anyone knows if Im able to get two monitors on this system.  If not, are there any suggestions in getting two monitors on a system?

thanks so much

daniel