Feel the power of USB

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…

Effect:

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.

Related posts:

1. Feel the power of USB with Nokia tablet
2. 2.6.23 on Tosa
3. New desk
4. Sharp Zaurus and chargers
5. How many serial ports are enough?