In my motherboard's BIOS settings, there are three USB settings that can be changed.
1.) USB Legacy Support
2.) USB 3.0 Legacy Support
3.) EHCI Hand-off
I'm at Win7 x64, do I need to disable them all?
Would keeping the USB/USB 3.0 Legacy Support enabled still use the driver installed in Win7 or will it override and use the built-in USB drivers in the motherboard?
Windows 7 Pro x64 SP1 and Mac OS X 10.8.3Intel Core i7-3820 Sandy Bridge-E at 4.75 GHz8 x Corsair 8GB DDR3 64 GB Kit @1866 Overcloc...GTX 580 and MSI R6870
1 x Corsair Force Series GT CSSD-F60GBGT-BK (OS)
2 x Western Digital Caviar Black Sata III 750GB (Raid 0)
1 x Western Digital Caviar Black Sata III 1TB (Media)
2 x Western Digital Caviar Black Sata II 640GB (Raid 0)
4 x GELID Solutions FN-TX12-15 120mm Case Fan with Superior Temperature Control
1 x Corsair 140mm Case Fan
1 x SilverStone FP55B Aluminum front panel 5.25" to a 3.5" bay converter
1 x Ultra Card Reader
1 x Sony Blu-ray Burner BD-5300S-0B
The way I understand it "USB Legacy Support" is what lets you access your BIOS with a USB keyboard. If you disable it and don't have a PS2 keyboard connected you won't be able to access your BIOS settings.
My Computer
At a glance
Windows 10 Education 64 bitAMD Phenom II X4 980 Black Edition Deneb 3.7GHz8GB 4GBx2 Kingston PC10600 DDR3 1333 MemoryZotac NVIDIA Geforce GT640 2 Gig DDR3 PCIe
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Home Built
OS
Windows 10 Education 64 bit
CPU
AMD Phenom II X4 980 Black Edition Deneb 3.7GHz
Motherboard
Asus M4N68T-M V2 µATX Motherboard
Memory
8GB 4GBx2 Kingston PC10600 DDR3 1333 Memory
Graphics Card(s)
Zotac NVIDIA Geforce GT640 2 Gig DDR3 PCIe
Sound Card
VIA VT1708s High Definition Audio 8-channel Onboard
The way I understand it "USB Legacy Support" is what lets you access your BIOS with a USB keyboard. If you disable it and don't have a PS2 keyboard connected you won't be able to access your BIOS settings.
I don't think it has anything to do with drivers and nothing to do with windows 7. Enabling it causes a USB keyboard to be emulated as a PS2 keyboard in BIOS. I could be wrong but thats my understanding. It sounds like you're going to disable them anyway so go ahead and do it and see what happens.
My Computer
At a glance
Windows 10 Education 64 bitAMD Phenom II X4 980 Black Edition Deneb 3.7GHz8GB 4GBx2 Kingston PC10600 DDR3 1333 MemoryZotac NVIDIA Geforce GT640 2 Gig DDR3 PCIe
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Home Built
OS
Windows 10 Education 64 bit
CPU
AMD Phenom II X4 980 Black Edition Deneb 3.7GHz
Motherboard
Asus M4N68T-M V2 µATX Motherboard
Memory
8GB 4GBx2 Kingston PC10600 DDR3 1333 Memory
Graphics Card(s)
Zotac NVIDIA Geforce GT640 2 Gig DDR3 PCIe
Sound Card
VIA VT1708s High Definition Audio 8-channel Onboard
I don't think it has anything to do with drivers and nothing to do with windows 7. Enabling it causes a USB keyboard to be emulated as a PS2 keyboard in BIOS. I could be wrong but thats my understanding. It sounds like you're going to disable them anyway so go ahead and do it and see what happens.
I do plan on disabling them because I'm not gonna use them. Oh and even if they are disabled, I can use my usb mouse and usb keyboard in the UEFI BIOS. It's just that I cannot use them in legacy operating systems and even in DOS. My main concern though is that if they are disabled won't it affect Windows 7 in any way?
