we need some clearance about WC621D8A-2T vs EPC621D8A
EPC621D8A was born 11/15/2017 - the first BIOS 1.20 includes microcodes for SkyLake A1,A2,B0,H0
WC621D8A-2T was born 12/11/2019 - the first BIOS 1.10 includes microcodes for SkyLake H0 - CascadeLake A0,B0,B1
(we see, NO microcodes for any SKL ES)
50650 = SKL A1 (QKGG...)
50651 = SKL A2 (QJVV,QJWW...)
50652 = SKL B0 (QL1M,QL1L...)
50653 = SKL B1 (P-8124,P-8136)
50654 = SKL H0 (6130,8124M,8175M...)
50655 = CLX A0 (QQ8A,QQ8M,QPKD...)
50656 = CLX B0 (QRAG,QRAN...)
50657 = CLX B1 (8222CL,8259CL,QTFC,...)