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M.2 SSD drive and Windows10 driver (slow)

HP Recommended
HP Probook 450 G5
Microsoft Windows 10 (64-bit)



I have an HP Probook 450 G5 that comes with an SK Hynix PC401 M.2 SSD drive. Windows 10 Pro 64-bit uses for this SSD drive the standard Microsoft Driver version 10.0.17134.1 of 21/06/2006


The first problem is that it does not achieve the performance expected: it barely hits 900MB/s on sequential read, with an average of 590MB/s, when the drive is supposed to hit 2500MB/s . Do you have an updated driver for Windows10 I can use?

Second problem is that I wish to update to October 2018 W10 version but Windows Update Assistant says it is not possible to install on an external USB drive (?!)


For first problem I have tried to update the driver through Device Manager > Update Driver but there is no new driver available to download. I've checked the Software&Drivers page at support with same result (no driver to download).

For second problem I've tried the solution pointed here:
But as an M.2 interface it is at "Location 8" so can't apply.


Any help would be appreciated! Thx.





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