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u.2 to SATA on Gigabyte Mobo

u.2 to SATA on Gigabyte Mobo
« on: April 23, 2024, 08:50:32 pm »
Not that board is gonna massively change the answer on this but GA-Z270X-Ultra Gaming (not yet owned)

Has a u.2 connector with 32Gbit bandwidth so basically 4GB/s or PCIE 3.0 x4 equivalent. I have heard (not confirmed) that you can connect 4 SATA drives to that by way of a cable but how? Surely it needs some sort of chipset to provide the SATA ports? or cable would SEEM to the be the one....

Anyone able to categorically answer if this works or not. Another 4 SATA ports instead of a useless U.2 port would be a major plus for me


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Re: u.2 to SATA on Gigabyte Mobo
« Reply #1 on: April 24, 2024, 05:56:49 am »
Sorry, but this won't work.  Here's why.  Depending on the CPU, you only get a limited number of PCIe lanes for peripherals or device connections.  This is why you are not able to connect a drive to every single SATA port and each m.2 connector.  This is not supported.

In order for the you to be able to connect multiple SATA disks to a U.2 connector, you would need to be able to configure it in BIOS to support SATA mode, instead of interfacing the PCIe controller directly on the CPU.  The board does not have this support.  This is also why you cannot create a mixed RAID array using a combination of M.2 and SATA disks.  Its one or the other, not both.   ;)  Hope this helps.  The X270 is older now by today's standards. Depending on the intended use, buying a newer board and processor could be a better long term investment.  I'd double check BIOS and CPU support if you plan to run W11.
Z390 AORUS PRO (F10) \850w, 9900K, 32GB GSkill TriZ RGB - 16-18-18-38, RTX 3080Ti FTW3 Ultra, 960 Pro_m.2, W11
Z370-HD3P (F5) \750w, 8350K, 8GB LPX 3200 - 16-18-18-38, GTX 970 FTW SC, Intel SSD, 2TB RAID1, W11
Z97X-UD5H \850w, 4790K, 32GB Vengeance, RTX 2080 FTW