Predominantly ports on my motherboard. However I do have one expansion card. My motherboard is an Supermicro X10SL7-F and my expansion card is a Marvell based card.   Here is how they are connected:   [8086:8c02] 00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05) [2:0:0:0] disk ATA CT1000MX500SSD1 023 /dev/sdb 1.00TB [3:0:0:0] disk ATA ST8000DM004-2CX1 0001 /dev/sdc 8.00TB [4:0:0:0] disk