At 9:11 AM -0700 10/23/09, Jeffrey Engle wrote: >Funny thing... I have an early 2005 Powermac G5 with "3 USB ports" on >the tower itself. Two on the rear and one on the front. Why does >system profiler say that I have 4 "USB Bus" and 1 "USB High-speed >Bus"? equalling 5 usb busses all together? and I thought ALL of the 3 >that I do have were "High-Speed" Can someone explain? Thanks, Jeff >
There are USB busses that are not associated with external ports. My C2D iMac has three USB ports, but reports five busses - three for the external ports, one serving the internal Bluetooth controller and IR receiver, and one apparently not in use. As for the reported speeds, that is affected by what is plugged into the port. The port I have my external hub plugged into reports as high-speed, while the other two are dragged down to 12 Mb/sec by the keyboard hub and cell modem, respectively. Bob --~--~---------~--~----~------------~-------~--~----~ You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list -~----------~----~----~----~------~----~------~--~---
