[root@pluto:~]# usbdevs
addr 1: UHCI root hub, Intel
addr 1: UHCI root hub, Intel
 addr 2: USB to Serial-ATA bridge, Sunplus Technology Inc.
addr 1: UHCI root hub, Intel
[root@pluto:~]# usbdevs -v
Controller /dev/usb0:
addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), Intel(0x0000), rev 1.00
 port 1 powered
 port 2 powered
Controller /dev/usb1:
addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), Intel(0x0000), rev 1.00
 port 1 powered
 port 2 addr 2: full speed, self powered, config 1, USB to Serial-ATA bridge(0x0c15), Sunplus Technology Inc.(0x04fc), rev c6.83
Controller /dev/usb2:
addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), Intel(0x0000), rev 1.00
 port 1 powered
 port 2 powered
[root@pluto:~]# pciconf -l
hostb0@pci0:0:0:        class=0x060000 card=0x488015d9 chip=0x254c8086 rev=0x01 hdr=0x00
pcib1@pci0:2:0: class=0x060400 card=0x00000000 chip=0x25438086 rev=0x01 hdr=0x01
uhci0@pci0:29:0:        class=0x0c0300 card=0x488015d9 chip=0x24828086 rev=0x02 hdr=0x00
uhci1@pci0:29:1:        class=0x0c0300 card=0x488015d9 chip=0x24848086 rev=0x02 hdr=0x00
uhci2@pci0:29:2:        class=0x0c0300 card=0x488015d9 chip=0x24878086 rev=0x02 hdr=0x00
pcib4@pci0:30:0:        class=0x060400 card=0x00000000 chip=0x244e8086 rev=0x42 hdr=0x01
isab0@pci0:31:0:        class=0x060100 card=0x00000000 chip=0x24808086 rev=0x02 hdr=0x00
atapci0@pci0:31:1:      class=0x01018a card=0x488015d9 chip=0x248b8086 rev=0x02 hdr=0x00
none0@pci0:31:3:        class=0x0c0500 card=0x488015d9 chip=0x24838086 rev=0x02 hdr=0x00
none1@pci2:28:0:        class=0x080020 card=0x14618086 chip=0x14618086 rev=0x04 hdr=0x00
pcib2@pci2:29:0:        class=0x060400 card=0x00000050 chip=0x14608086 rev=0x04 hdr=0x01
none2@pci2:30:0:        class=0x080020 card=0x14618086 chip=0x14618086 rev=0x04 hdr=0x00
pcib3@pci2:31:0:        class=0x060400 card=0x00000050 chip=0x14608086 rev=0x04 hdr=0x01
twa0@pci4:1:0:  class=0x010400 card=0x100313c1 chip=0x100313c1 rev=0x00 hdr=0x00
em0@pci3:1:0:   class=0x020000 card=0x11138086 chip=0x10138086 rev=0x00 hdr=0x00
em1@pci3:2:0:   class=0x020000 card=0x11138086 chip=0x10138086 rev=0x00 hdr=0x00
none3@pci1:4:0: class=0x030000 card=0x00081002 chip=0x47521002 rev=0x27 hdr=0x00