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AppleUSBEHCI vs. AppleUSBOHCI

Sedulous

Sedulous

macrumors 68030
Original poster
Dec 10, 2002
2,530
2,577
What is the difference between AppleUSBEHCI and AppleUSBOHCI? Is there any advantage to one over the other?
 
D

Dr. No

macrumors regular
Sep 13, 2003
193
0
One is for USB 1.1 (OHCI), the other is for USB 2.0 (EHCI).

Where exactly did you see these drivers??
 
Sedulous

Sedulous

macrumors 68030
Original poster
Dec 10, 2002
2,530
2,577
Dr. No said:
One is for USB 1.1 (OHCI), the other is for USB 2.0 (EHCI).

Where exactly did you see these drivers??
Click to expand...

These things were found in Profiler under hardware/USB. Thanks, I didn't know even that much about the difference.
 
SmurfBoxMasta

SmurfBoxMasta

macrumors 65816
Nov 24, 2005
1,351
0
I'm only really here at night.
OHCI = Open Host Controller Interface
EHCI = Enhanced Host Controller Interface

They are both standard electrical/signal transfer/identifier protocols for how devices interact with your computer/OS through USB. If Apple had NOT adopted these a long time ago, we would still be using scsi, serial and ADB connections ect ect :(
 
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