Alright, my system is in my sig below. 15" PowerBook G4. In System Profiler, it says my Combo Drive is the "MATSHITA CD-RW CW-8123." The drive being sold on eBay is the "CW-8123-C." Here is the link: http://cgi.ebay.com/CW-8123-C-APPLE...ryZ51038QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Will this work in my PowerBook? I'm not sure if the extra "C" on the end means I can't use it.