I have MDK 9.0 and i need the location of one of my usb ports for a program
The default port (serial i think) it is set for is /dev/ttyS1
I need to change the ttyS1 to the location of a USB port.

in /proc/bus/usb/devices i got this

---------------------------------------------------------------------------------------------------------
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc=129/900 us (14%), #Int= 2, #Iso= 0
D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
S: Product=USB UHCI Root Hub
S: SerialNumber=eec0
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 4
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0451 ProdID=2046 Rev= 1.25
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=255ms
T: Bus=01 Lev=02 Prnt=02 Port=02 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 1.01 Cls=02(comm.) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=1630 ProdID=0041 Rev= 1.00
S: Manufacturer=2Wire Inc
S: Product=2WIRE USB Remote NDIS Ethernet
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr= 40mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=ff Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=1ms
I: If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=(none)
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
T: Bus=01 Lev=02 Prnt=02 Port=03 Cnt=02 Dev#= 4 Spd=1.5 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=049f ProdID=000e Rev= 1.00
S: Manufacturer=Compaq
S: Product=Compaq Internet Keyboard
C:* #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr= 50mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=01 Driver=keyboard
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=24ms
I: If#= 1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=00 Driver=(none)
E: Ad=82(I) Atr=03(Int.) MxPS= 6 Ivl=3ms
-----------------------------------------------------------------------------------------------------------

Ive looked around in the /dev directory and can not find any clues to what any of the USB's would be called.

someone help me figure out how to point to a USB device?

I'm guessing here:

Do you have a USB MODEM? It might be /dev/ttyUSB0. Verify the usbserial module is loading?

See www.linux-usb.org for support info on your device.

My USB ports are listed as /dev/ttyUSB0, /dev/ttyUSB1 and so forth.

To get my palm pilot working, I had to create a symbolic link to this, as Ximian insisted on using a serial port for it. I had to fiddle around with which USB port it actually was, though, before it would work.

If it is a usb mass storage device (compact flash reader) the device will be /dev/sdax
x = nothing, 1, 2 etc...