Hi All: I would like to purchase a PCI card to add more Fire Wire and USB ports. Is it possible to use this card in my current G4 and the new Mac's? jerryw G4-1.2 GHz/1 GB SDRAM/OSX 10.4.4/Safari 2.0.3/mail.app 2.0.5/ iTunes 6.0.2/iPhoto 5.0.4/LaCie CD-R/Palm DT 4.1USB/Studio Display 21"/View Sonic PF790/Belkin 5 Port Network Switch/Belkin UPS F6C100-UNV/Micro Connectors Powered USB Hub