Question I've connected PowerCore via Apples's Thunderbolt to Firewire adapter to my Macbook Retina but it doesn't work properly. What's wrong Answer Be aware that Apple's Thunderbolt FireWire controller has several issues with at least Retina MBP after EFI firmware update 1.0. We have created a workaround which is addressing this issue. Please register and join the PowerCore beta group to get access to the beta software downloads.