Multiple SDI captures/outputs on one device, UltraStudio 4K, AJA IO XT?
I would like to know if there are any devices that can offer multiple SDI captures and outputs off one device? I note that Blackmagic Design's UltraStudio 4K and 4K Extreme offers 2 and 4 SDI inputs/outputs respectively, however my understanding is that only one input can be utilised at one time. I've been caught out by many Blackmagic products in the past by assuming they should do what the advertising blurb boldly claims to do, only upon further investigation to find some very small print stating the limitation of the product. What I'm really looking for is a device that can offer 2 inputs and 2 outputs simultaneously off a single Thunderbolt 3 port.
I understand that the Blackmagic UltraStudio 4K cannot do this. Does any one know if the AJA IO XT can do this? If not, what are the nearest alternatives to these products?