firewire western digital

hd externo western digital 500gb my book home edition 7200rp usb 2 firewire e sata wdh1cs5000n
R$ 650

western digital hd externo 1tb firewire 800 400 e usb
R$ 695

western digital my book studio edition 500 gb quad interface 40 esata firewire 400 firewire 800 usb 2 41
R$ 660

hd externo western digital my book studio 1tb firewire usb firewire 800 usb 2 apple mac win7 wd nota fiscal e garantia
R$ 569