11
4
I have a Jetway NF9E-Q77 motherboard which supports USB 3.0. An Intel driver is available to enabled USB 3.0 support in Windows 7.
Assuming the driver is installed, should xHCI hand-off be enabled or disabled in BIOS setup?
The BIOS manual says this:
I know Windows 7 doesn't natively support USB 3.0. That being the case, it seems the setting should be enabled.
On the other hand, the Intel driver enables USB 3.0 support in Windows 7. That being the case, it seems the setting should actually be disabled.
Which one is correct?
2Incidentally, while xHCI hand-off should be ENABLED, eHCI hand-off should be DISABLED. – misha256 – 2014-10-08T00:18:07.587
1Interesting, and somewhat unrelated note. If you are installing VMWare ESXi 5.5+ and the entire USB System cuts out midway through boot, then eHCI hand-off needs to be ENABLED – edhurtig – 2015-03-25T05:35:20.743
1"While xHCI hand-off should be ENABLED, eHCI hand-off should be DISABLED". How true. I found Silverstone EC05-E USB 3.0 controller would "disappear" upon re-boot in Windows XP or Windows 8.1, in an old motherboard with PCI Express 1.0. After changing BIOS to disable eHCI hand-off, EC05-E now works as expected, ie. the device and driver no logner disappers updon re-boot, and USB 3.0 works fine in both Windows XP or Windows 8.1 on an old motherboard with PCI Express 2.0. Although EC05-E is designed for PCI Express 2.0, many USB 3.0 cards will work at up to 2500 mbps, or half the 5000 mbps USB 3. – None – 2015-04-18T22:15:03.120