Adding second HVR 2250 how to set up?

[imagn]

I have one HVR 2250 installed and wil lbe replacing my 1600 with a nother 2250 does the cards need to be set up as below

first card capture source
2250 1 - device 1
2250 1 - device 2

Second Card capute source
2250 2 - device 3
2250 2 - device 4

or should each card be 1,2

Thanks

[sub]

The first device will have capture sources for #1 and #2, the second device will have capture sources for #3 and #4.