For the top one : 99% this is an early run of a RME HDSPe MADI Card (not the FX, the ones without the DSP in them). First runs came with black bezels, the modern ones are polished. They cost about $1000 each new, don't know about the resale value
MADI is a pro digital interface, think SPDIF/Toslink but 64 of them on the same fiber pair
The bottom card is a daughter card to the MADI card used to keep digital audio equipment in check. It will gives you MIDI I/O with the right cable (easy to find online, look for reference BO-9652)
I've been using them in pro studios and broadcast facilities for years
They come with awesome onboard mixing and MacOS drivers. You can use this one on a modern Mac in a Thunderbolt enclosure as well
Without external MADI gear or Analog converter, it will gives you hardware internal sound mixing on a 64x64 matrix, a better analog sound output and MIDI IO