Intel QME7362CK TRUE SCALE FABRIC INFINIBAND HOST ADAPTER - these would appear to be for the Mezz slot in something similar to the C6100. At this price, it's worth a punt!
Intel QME7362CK TRUE SCALE FABRIC INFINIBAND HOST ADAPTER MEZZANINE CARD DELL | eBay
Intel QME7362CK TRUE SCALE FABRIC INFINIBAND HOST ADAPTER MEZZANINE CARD DELL | eBay