Re: Blackmagic Design Intensity Pro and Dell
The unit requires a usb 3.0 motherboard in order to work. Since that spec is new few systems have them. Your 420 is only 2.0 spec and according to the specs :
Installation: USB 3.0. Requires an x58 based motherboard with onboard USB 3.0, or a USB 3.0 PCI Express card and an x58 or P55 series motherboard. Does not support USB 2.0 capture and playback. Please check the Support pages to see the full system requirements.