Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: A520I AC
In the end I guess to properly map physical drives to physical motherboard connectors would be to shutdown, remove a cable, boot up and see what is missing.
After all the below I still can't solidly map to the physical cable / motherboard connector with complete confidence. But my guess is the physical connectors map to (if that is the way they are enumerated by the operating system at boot up).
0 [0:0:0:0] ata1
1 [1:0:0:0] ata2
2 [4:0:0:0] ata5
3 [5:0:0:0] ata6
dmesg | grep 'SATA link'
[ 4.120671] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 4.612668] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 5.104669] ata5: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 5.596674] ata6: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
lsscsi --verbose
[0:0:0:0] disk ATA WDC WD80EFAX-68K 0A81 /dev/sda
dir: /sys/bus/scsi/devices/0:0:0:0 [/sys/devices/pci0000:00/0000:00:01.2/0000:02:00.1/ata1/host0/target0:0:0/0:0:0:0]
[1:0:0:0] disk ATA WDC WD80EFAX-68K 0A81 /dev/sdb
dir: /sys/bus/scsi/devices/1:0:0:0 [/sys/devices/pci0000:00/0000:00:01.2/0000:02:00.1/ata2/host1/target1:0:0/1:0:0:0]
[4:0:0:0] disk ATA WDC WD80EFAX-68K 0A81 /dev/sdd
dir: /sys/bus/scsi/devices/4:0:0:0 [/sys/devices/pci0000:00/0000:00:01.2/0000:02:00.1/ata5/host4/target4:0:0/4:0:0:0]
[5:0:0:0] disk ATA WDC WD80EFAX-68K 0A81 /dev/sdc
dir: /sys/bus/scsi/devices/5:0:0:0 [/sys/devices/pci0000:00/0000:00:01.2/0000:02:00.1/ata6/host5/target5:0:0/5:0:0:0]
[N:0:0:1] dsk/nvm BIWIN NV3500 1TB__1 /dev/nvme0n1
dir: /sys/class/nvme/nvme0/nvme0n1 [/sys/devices/pci0000:00/0000:00:01.1/0000:01:00.0/nvme/nvme0/nvme0n1]
lspci -v
# snippage...
02:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] 500 Series Chipset SATA Controller (prog-if 01 [AHCI 1.0])
Subsystem: ASMedia Technology Inc. ASM1062 Serial ATA Controller
Flags: bus master, fast devsel, latency 0, IRQ 48, IOMMU group 15
Memory at fc780000 (32-bit, non-prefetchable) [size=128K]
Expansion ROM at fc700000 [disabled] [size=512K]
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [78] Power Management version 3
Capabilities: [80] Express Legacy Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Kernel driver in use: ahci
Kernel modules: ahci
# snippage...
lsscsi -H
[0] ahci
[1] ahci
[2] ahci
[3] ahci
[4] ahci
[5] ahci
[N:0] /dev/nvme0 BIWIN NV3500 1TB BSAC46110303270 GT1e6633
root@truenas[/mnt/pool0/homes/myuser]# lsscsi -g
[0:0:0:0] disk ATA WDC WD80EFAX-68K 0A81 /dev/sda /dev/sg0
[1:0:0:0] disk ATA WDC WD80EFAX-68K 0A81 /dev/sdb /dev/sg1
[4:0:0:0] disk ATA WDC WD80EFAX-68K 0A81 /dev/sdd /dev/sg2
[5:0:0:0] disk ATA WDC WD80EFAX-68K 0A81 /dev/sdc /dev/sg3
[N:0:0:1] disk BIWIN NV3500 1TB__1 /dev/nvme0n1 -
lsblk -o NAME,MODEL,SERIAL,WWN,HCTL
NAME MODEL SERIAL WWN HCTL
sda WDC WD80EFAX-68KNBN0 VAHSR2WL 0x5000cca099d8def9 0:0:0:0
└─sda1 0x5000cca099d8def9
sdb WDC WD80EFAX-68KNBN0 VAHG0VKL 0x5000cca099d477ea 1:0:0:0
└─sdb1 0x5000cca099d477ea
sdc WDC WD80EFAX-68KNBN0 VAGK95TL 0x5000cca099c7dccb 5:0:0:0
└─sdc1 0x5000cca099c7dccb
sdd WDC WD80EFAX-68KNBN0 VAHWTRVL 0x5000cca099daba62 4:0:0:0
└─sdd1 0x5000cca099daba62
zd0
nvme0n1 BIWIN NV3500 1TB BSAC46110303270 eui.313033303332373050c68e0842534143
├─nvme0n1p1 eui.313033303332373050c68e0842534143
├─nvme0n1p2 eui.313033303332373050c68e0842534143
└─nvme0n1p3 eui.313033303332373050c68e0842534143
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