Any suggestions for selling obsolete corporate hardware on eBay?

I’ve no eBay experience as a buyer or seller, but it gnaws at my soul to throw out functional hardware. (Well, it would if I had a soul; I’m not really sure what’s getting gnawed on.) I’ve received clearance from the Legal department to try to move some obsolete equipment on eBay. The Accounts Receivable dept. has agreed to process credit card payments. Any suggestions to help a newbie cut the learning curve and not commit any social gaffes?

Thanks.