AnsweredAssumed Answered

AM1 APU (Athlon 5350) USB Ports not running at USB 3.0 mode

Question asked by tyrel on Aug 15, 2015
Latest reply on Aug 16, 2015 by tyrel



This problem is driving me nuts, I've been trying to fix it for the past 3 days to no avail, leading to me being extremely pissed at AMD.


I've recently brought an Asus AM1i-A mobo with an Athlon 5350. Everything runs fine, except all the USB ports, including the blue ones, are running in USB 2.0 (High speed) mode. I have an USB 3.0 HDD (Seagate Expansion Desk 2TB) that ran perfectly fine in USB 3.0 mode with the previous System, which was an Asrock D1800B-ITX with Intel J1800 CPU. This latter system simly had an Intel USB 3.0 extensible host controller driver and that was it, blue ports were running in SuperSpeed mode leading to the external HDD having around 120 MB/sec speeds.


With this AMD rig the USB HDD does about 35-40 MB/sec which as far as I can tell is the USB 2.0 limitation, and also response times on it are generally slower. To my understanding this AMD system should have a very very similar driver, called AMD USB 3.0 extensible host controller driver, but absolutely nothing is willing to install it.


Info about the drivers / ports:


What I've tried this far:

  1. Uninstall ALL USB devices in Windows to let it redetect and reinstall them.
  2. "Scan for hardware changes"
  3. "Update device driver software..." using Windows Update
  4. Install AMD Chipset drivers from
    1. note that whatever I do this installer does not mention any kind of USB driver during the installation process
  5. Change USB related BIOS settings. There are only 2 of these:
    1. Legacy USB 3.0 Support - Enabled or Disabled, does not change a damn thing
    2. Enable USB EHCI Hand-off - Enabled or Disabled, does not change a damn thing
  6. Completely reinstall Windows (losing all my settings and therefore losing hell of a lot of time)
    1. Previous was 8.1, new one is 10, both have the exact same issue and driver setup
  7. Tried both the blue USB 3.0 ports, it's all the same
  8. Moved the Seagate HDD to my Z77 based desktop PC where it again runs in USB 3.0 mode without any tricks, so it's not faulty
  9. Tried the chipset driver from Asus, but appearantly it's the same as the one that AMD offers. No wonder though, it's a SoC, Asus has little to do with the drivers.
  10. BIOS is updated to the latest, which is 0701 as of now.


So, seriously what the heck is wrong with AMD USB 3.0 drivers and this darned AM1 APU platform? It's driving me nuts.