HP Smart Array P840/4GB FBWC 12Gb 2-ports Int SAS Controlle ** 726897-B21 ** | eBay
Original For Hp Smart Array P840 4gb Array Card Fbwc 726897-b21 12gb 2-port Sas Controller 761880-001 100% Tested Fast Ship - Pc Hardware Cables & Adapters - AliExpress
HPE Smart Array P840 Controller cabling
HP Smart Array P840 12GB Controller Mfr P/N 784486-001