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sunsluv

macrumors newbie
Original poster
Mar 18, 2012
18
0
Arizona
What is the difference between the USB 3.0 High-Speed Bus vs. the USB 3.0 SuperSpeed Bus on the 15" 2012 MacBook Pro w/Retina Display? Is one faster than the other?

When I connected my new Seagate GoFlex Desk external hard drive, I was able to figured out that the USB 3.0 SuperSpeed Bus is located next to the SD Card Reader on the right side.

This is from the System Information Hardware Overview:
(the info below is the same for both)

USB 3.0 High-Speed Bus:

Host Controller Location: Built-in USB
Host Controller Driver: AppleUSBXHCI
PCI Device ID: 0x1e31
PCI Revision ID: 0x0004
PCI Vendor ID: 0x8086
Bus Number: 0x14

USB 3.0 SuperSpeed Bus:

Host Controller Location: Built-in USB
Host Controller Driver: AppleUSBXHCI
PCI Device ID: 0x1e31
PCI Revision ID: 0x0004
PCI Vendor ID: 0x8086
Bus Number: 0x14
 
Last edited:
High Speed USB = USB 2
Super Speed USB = USB 3

I think its just referring to the fact it can run both high speed and super speed, but people don't usually use those names. So a USB 3 port running High Speed basically means it has a USB 2 device running in it so it cannot run Super Speed.
 
High Speed USB = USB 2
Super Speed USB = USB 3

I think its just referring to the fact it can run both high speed and super speed, but people don't usually use those names. So a USB 3 port running High Speed basically means it has a USB 2 device running in it so it cannot run Super Speed.

Thanks for clarifying this for me. I guess I can use either hub since they are the same... :)
 
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