Today I got few USB gadgets:

  • Ethernet card (Damicom 9601 based)
  • RS232 cable
  • multi-port card-reader with USB 2.0 hub integrated (powered)

So during restructure of my USB network I tried to connect all my USB devices to desktop. With two external hubs I got out of ports…


12:00 hrw@home:~$ lsusb
Bus 001 Device 055: ID 0a46:9601 Davicom Semiconductor, Inc.
Bus 001 Device 054: ID 058f:6362 Alcor Micro Corp.
Bus 001 Device 053: ID 0fce:d016 Sony Ericsson Mobile Communications AB
Bus 001 Device 036: ID 058f:6254 Alcor Micro Corp.
Bus 001 Device 001: ID 0000:0000
Bus 003 Device 059: ID 0525:a4a2 Netchip Technology, Inc. Linux-USB Ethernet/RNDIS Gadget
Bus 003 Device 058: ID 0424:223a Standard Microsystems Corp. 8-in-1 Card Reader
Bus 003 Device 057: ID 1457:5122
Bus 003 Device 056: ID 0421:0431 Nokia Mobile Phones
Bus 003 Device 055: ID 058f:9254 Alcor Micro Corp. Hub
Bus 003 Device 053: ID 04bf:0319 TDK Corp.
Bus 003 Device 046: ID 0a81:0205 Chesen Electronics Corp. PS/2 Keyboard+Mouse Adapter
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 011: ID 04b8:082f Seiko Epson Corp.
Bus 002 Device 010: ID 046d:c70a Logitech, Inc.
Bus 002 Device 009: ID 046d:c70e Logitech, Inc.
Bus 002 Device 008: ID 046d:0b02 Logitech, Inc.
Bus 002 Device 001: ID 0000:0000

The list contain:

  • USB Cup heater with integrated USB 1.1 Hub
  • Nokia 770
  • Sharp Zaurus C760
  • FIC Neo1973
  • Davicom Ethernet card
  • EPSON Stylus DX3800
  • TDK Bluetooth 1.1 dongle
  • Logitech Bluetooth 2.0 EDR dongle
  • PS/2 -> USB converter with optical mouse connected
  • Hama multi-port card reader
  • no-name multi-port card reader
  • no-name multi-port card reader with integrated USB 2.0 Hub
  • Sony Ericsson k750i phone

As result I got:

  • 14 usb-storage devices
  • 3 serial ports
  • 3 network interfaces
  • 3 input devices (Logitech Bluetooth need to be switched from HID to HCI)

And everything was working, needed /dev/ entries were created and HAL managed to show me proper tree with all devices. Both hubs were powered during test.

Now I disconnected most of them and left only needed ones.

Feel the power of USB

4 thoughts on “Feel the power of USB

  • 19th April 2007 at 13:30

    😀 USB spagetti monster ;D

  • 19th April 2007 at 13:21

    You got a USB cup heater too, cool. Can you mention which brand/model it is., I would like get one for me.



  • 20th April 2007 at 02:11


    if you’ve managed to find an USB<>RS232 cable, which doesn’t get hickups when you try to transfer binary data from a Linux box to some device: Please share it’s model name and where you got it. All models I’ve got so far just fail on binary stuff, while a friend’s cable jsut works well 🙁



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