Early HP and Agilent 5973A GC/MS systems came with the HPIB interface protocol.  Now, newer '73s and '75s are equipped with the "LAN" protocol.  At one time, Agilent sold the Lan Upgrade Kit as a separate item, but now no longer offers this particular solution. If you want to "upgrade" to the newest software from Agilent, the ONLY product you can buy from Agilent is the "High Performance" upgrade kit, starting at around fourteen-thousand dollars.  Our Bare Bones Lan kit is less than half that price.