How can I detect the dedicated device name of a serial usb adapter? 
I know to access it with /dev/ttyUSB0, but what if I have two 
different serial adapters connected? Which one is USB0 and which USB1? 
Are there somewhere databases where to asign vendor and product ID to 
an name? 

I've a prolific serial adapter here: 

# lsusb -vvv
Bus 001 Device 003: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x067b Prolific Technology, Inc.
  idProduct          0x2303 PL2303 Serial Port
  bcdDevice            2.02
  iManufacturer           0 
  iProduct                0 
  iSerial                 0 
[...]

How can I assign a  usb://PROLIFIC/Serial.......  to that device?

e.g. I've a EPSON ink printer, USB. Turbo Print and sometimes CUPS html
frontend detects usb://EPSON/Stylus%20C64. But it also 
works with /dev/usblp0! How can I detect the usb://EPSON/Stylus%20C64?

thx
Ekkard


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