I bought this router for my network but just can't seem to find 12 places for an rj45 jack, so I it's for sale. 3Com 12 port fan cooled commercial rack mount hub, it's a linkbuilder fms 100 100base-tx hub. It has expansion slots in the back along with a dc input and a panel for upgrades. Make mean offer. I live in upstate NY so if your close come by and have a look. My email is Vernonm5 at yahoo.com