vaderd Posted March 1, 2006 Share Posted March 1, 2006 I have the DFI Ultra-D nForce 4 mainboard and all my USB ports only work in 1.1 mode. I do get errors from the EHCI driver: USBF: 20.436 EHCI controller unable to take control from BIOSUSBF: 20.436 AppleUSBEHCI[0x23e1000]: unable to obtain ownership: 0xe00002be USBF: 20.436 AppleUSBEHCI[0x23e1000]::UIMInitialize - Error occurred (0xe00002be) USBF: 20.438 AppleUSBEHCI: unable to initialize UIM Don't know if that's the problem. Tried different settings in the BIOS, but still no go. What could be the problem, did anyone solve it? Thanks Link to comment https://www.insanelymac.com/forum/topic/10597-dfi-nforce-4-no-usb-20/ Share on other sites More sharing options...
Gdfath3r Posted March 2, 2006 Share Posted March 2, 2006 I have the same problem........I would ask more knowledgeable forum users, if they can help us how to fix our problem. Myself I have NF4 board, and I had working USB2 in 10.4.1 system. Link to comment https://www.insanelymac.com/forum/topic/10597-dfi-nforce-4-no-usb-20/#findComment-66754 Share on other sites More sharing options...
vaderd Posted May 21, 2006 Author Share Posted May 21, 2006 I just gave my OS X tries a new run with 10.4.6, but the problem mentioned above persists. I have to un/replug my USB devices, and don't have any USB2.0 support. Did anyone get it to work? Link to comment https://www.insanelymac.com/forum/topic/10597-dfi-nforce-4-no-usb-20/#findComment-117082 Share on other sites More sharing options...
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