Times for cardbus are over. For express card you can get laptops.
http://geizhals.de/?cat=nb&xf=31_Ex … amp;sort=p
Then you require this interface card to connect the Digiface:
http://www.rme-audio.de/products/hdspe_expresscard.php
If you have it, then all is fine, otherwise price tag around €389: https://shop.synthax.de/ItemDetail.aspx … 0&pr=0
Other option would be to invest into a more modern interface and sell the old stuff to support this. There are no such interfaces available anymore comparable to the Digiface, specialized into offering multiple ADAT IN and OUTs.
You would need to look into an Firewire / USB / Thunderbolt solution, to get at least 2 ADAT IN / OUT: 802, UFX, UFX+.
But these interface already have 8 analog inputs and outputs. Also a reason to eventually sell all the rest to support buying one of there.
I would get the RME UFX as long as the promotion is running. The price is simply hot.
But then you need to hurry up in your decision, as the promotion ends around mid of January. And .. you do not have so send an old interface back ... you simply get the UFX to the very nice price.
A more cost efficient solution would be to change from Laptop to Desktop and get a RME RayDAT to connect the ADI via ADAT. Desktop is better anyway in terms of performance.
BR Ramses - UFX III, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1680v4, Win10Pro22H2, Cub14