Hi All Bought this from the Apple Store in Cardiff last week when wanting to connect my Macbook to my Macbook Pro to set up and copy across all my existing apps, files and data. As expected, the set up worked a treat. 2M Firewire 800 (9-pin) to Firewire 400 (6-pin) High quality cable, £15.00 & p+p This is the unit on Apple store (though marked as Belkin, this one is the iWires TechLink cable.) http://store.apple.com/uk/product/TP320ZM/A?mco=MTY3ODQ5OTY Blurb: Featuring a nine-pin to six-pin connector design, this FireWire 800/400 cable lets you connect a FireWire 800 device to a FireWire 400 device. It supports all the advantages of FireWire - including simultaneous connection of up to 63 devices, real-time digital audio and video transfer, peer-to-peer device connections, Plug-and-Play device installation and hot swap capability. Also, here's a shot of it in its original packaging sat proudly next to my spanking new Macbook Pro Cost £24.99, selling for £15 & p&p. PM if you want it.