Remember, this is in proxmox vm, so yes there is a 6 port ahci on board, but its not pass thru to the vm, the vm node only has the 1 virtual qm emu hdd at 32gb set at slot #7, where the lsi card is pci pass thru to vm node and its starting at #15.     I do know, look at the picture from the lsiutil program (I posted this above also) shows port b cable p1 = disk 0 (to the lsi) and port a cable p1 = 7 so, in this case according to the lsiutil to mapping is as follows