If this is the part #: HYMP564964BP8-Y5 (http://google.com) - google the part for more information. It is a 512 MB DDR2 stick of ram for any desktop that takes that type of ram.
The ram works perfectly, but yes once it leaves my door I am no longer responsible for it. That being said I have had no valid complaints on any of my auctions.
NP I will send them in stiff plastic container designed for ram, bubble wrap and either envelope with cardboard to also prevent bending or a small cardboard box