MSI B450-A PRO doesn't recognize external HDD via esata-sata

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Subject: MSI B450-A PRO doesn't recognize external HDD via esata-sata
Posted by:  MaxTheFast (gipsy.shadow.…@gmail.com)
Date: Wed, 19 Jun 2019

I've got a HDD fantec external enclosure with esata II port and its own pow=
er supply. I've bought an esata-sata cable to connect this enclosure to one=
of my mobo's 6 sata III ports.
Firstly I connected the fantec power supply, then its esata-sata cable and =
then I've started an ubuntu live session. After that I switched on the encl=
osure but nothing happened: the enclosure's led remained switched off and n=
o external device icon appeared on ubuntu desktop. I switched off the enclo=
sure, removed the esata-sata cable and connected the enclosure via an usb c=
able, then switched the enclosure on and it worked: its led switched on and=
the device icon appeared on the desktop.

I supposed the brand new esata-sata cable failed but I checked it by a test=
er (@ ohm scale) and verified there was a link between some pins of the esa=
ta and sata plugs. So I supposed the enclosure's esata port didn't work pro=
perly and I tested it and verified there was a link between some esata's pi=
ns and the pins connected to the HDD. I'm not skilled but I guess both the =
cable and the enclosure work fine.

That said, can you tell me why my mobo is not able to load an external devi=
ce, like my enclosure, via its sata ports?
Moreover I saw that nothing was listed in sata port list within bios enviro=
nment when I started the bios with the enclosure connected via esata-sata c=
able. Should I modify something in bios to make it "see" a esata-sata cable=
as a common sata-sata inner cable?

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