I bought a 32 GB CF card (SanDisk) and a UGREEN multi-card reader: https://smile.amazon.com/gp/product/B01ARAH6O0/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1. The D700 works just fine, but I can't read the cards. The card reader does just fine with SD cards on my PC at work and on my Mac at home. On both computers, nothing changes when I put in the CF card. I bought another card (same kind of card) and still can't read it. Any suggestions?