don't KNOW MUCH ABOUT THIS, would prefer local buyer! HOWEVER, will ship as it seems easy! SHIPPING IS GoinG To be about $100 and you will have to pay this up front because my paypal account is in terrible standing due to two very bad transactions that turned nasty! These do work, one is marked bad, it is a AVAYA RS232 the others tested and good! OK! So, if you can pick up or send a friend, I know there are local phone buyers, you can have the other 8 computers, 2 flat screens and monitors that came with the stuff!