On 03/17/05 10:00 Alan Stern spoke:
On Thu, 17 Mar 2005, Bob Lockie wrote:
4 port PCI USB2 card with 4 port hub connected:
bash-2.05b# lsusb
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 004: ID 05e3:0605 Genesys Logic, Inc.
Bus 001 Device 001: ID 0000:0000
4 port PCI USB2 card without hub:
bash-2.05b# lsusb
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000
Buses aren't the same thing as ports. Your card has 3 USB controllers
(hence 3 buses). Probably one of them is high-speed and connects to all
four ports, while the other two are full/low-speed and are attached to two
ports each.
That was it, thanks for the info.
It's a little confusing because high-speed buses are considered logically
separate from full/low-speed buses, even though they communicate over the
same cables and ports.
Alan Stern
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