[Bob Haber]

With the Asus USB3 card, you would seem to meet the requirements for the Intensity Shuttle.

As far as disk I/O requirements, though, it should be the same between the Shuttle and the Pro, as they are very similar in terms of what they can capture. With only a single hard drive, you wouldn’t be able to capture uncompressed HD video from either system, you would have to compress it. The main difference between the Intensity and the Hauppage is that the Hauppage would be doing the compression in the capture device, so you wouldn’t have any control over it, or the ability to switch to uncompressed down the road if you were to upgrade your disk.

Going forward, the Shuttle gives the potential for capturing 1080p60 which would be better for game consoles, but this doesn’t work yet. Blackmagic says the hardware in the device can theoretically support it with faster USB3 controllers.

[Bob Haber]

On a PC, it would be displayed at the start of bootup (possibly you’d have to press a key to see the text startup sequence instead of some logo) but on a Mac I really have no idea, sorry.

[Bob Haber]

The problem with the H57 chipset compared to the P55 is that it can’t support expansion cards other than one video card at full PCI-e 2.0 speed. Here’s a good explanation:
https://ixbtlabs.com/articles3/mainboard/i55h-57h-chipsets-p1.html

If you had an x4 slot available you might be able to get it to work with an x4 USB3.0 adapter, but you don’t have that.

You should probably return it and get an Intensity Pro which will work in the available PCIe x1 slot.

Once more motherboards are available that can support full speed PCI-e 2.0 on their X1 slots, the Shuttle should be more compatible. It’s not certain whether Blackmagic will update the specification page or not, though. For example, the AMD 890FX and 890GX have full speed PCI-e 2.0 plus the NEC USB3 chip optionally onboard and should work with the Shuttle, but they are not mentioned.

[Bob Haber]

Is your motherboard based on an X58 northbridge? The Intensity PCI-e cards don’t work with the X58.