Sandisk Extreme 64GB USB 3.0 Flash Drive incompatible with AMD A75 chipset?

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1

Hi all,

I bought a 64GB Sandisk Extreme USB 3.0 Flash Drive, and if it’s plugged in to the USB 3.0 ports controlled by the chipset (AMD A75),  the pendrive don’t work correctly, but it’s too slow, like USB 2.0 pendrive.

I tested the drive on USB 3.0 ports on my desktop and this is the results:
Don’t work (too slow) if plugged here:  AMD A75 FCH (Hudson D3) chipset : 4 x USB 3.0 port(s) (2 at back panel, blue, 2 at mid-board)
Work fine if plugged here ASMedia® USB 3.0 controller : 2 x USB 3.0 port(s) (2 at back panel, blue)

Work fine if plugged here SilverStone EC01-P (an expansion card controlled by NEC uPD720202, PCI Express 2.0 with single lane(x1) throughput 5Gbit/s)

All the driver / firmware / bios are updated.

I tested the pendrive with CrystalDiskMark.

Motherboard model: Asus F1A75M-Pro.

Windows 7 64bit

Asus support says :  " … the pendrive it’s incompatible with chipset …" 

It’s possible???

Thank you very much.

2

Yes, Sandisk Extreme 64GB is “officially incompatible” with some USB chipsets.

Besides the one you mentioned, it is “officially incompatible” with NEC/Renesas µPD720200 USB host chipset.

Sadly, you find this out after purchase…

Regards,

David

3

this is my problem:

My Sandisk Extreme 64Gb USB Falsh Drive _ Don’t work _ If it’s plugged in to the USB 3.0 ports controlled by the chipset (AMD A75 FCH, Hudson D3), it’s too slow, like USB 2.0 pedrive.

If the pendrive it’s plugged in to USB 3.0 controlled by ASmedia or NEC uPD720202 work fine.

Thanx

Mauro