Furuno Felcom 50 Operator's Manual page 161

USB driver installation
Prior to installing the USB drivers, remove vtLite if it is to be used via USB.
Remove all programs that use virtual COM ports, such as RVS.
The programs may be reinstalled when the USB installation has been
completed.
Procedure:
1 Insert the CD enclosed with the manual.
2 With the terminal ON, connect the USB port of a PC and FELCOM 50 as
shown below.
3 Windows opens the Found New Hardware Wizard.
See next page.
Note that the explanation of AT commands are exactly same as RS-232 Mobile
Data Service. If necessary, refer to paragraph "6.3.7 AT commands.
Modem Drivers
Win 2000/XP:
Mdm4nera.inf
FELCOM 50
ON
48 VDC
SYNC
ISDN
ALARM
RS-232 A RS-232 B
USB
5 4 3 2 1
5 4 3 2 1
9 8 7 6 9 8 7 6
PC USB port
DTE
6. DATA COMMUNICATION
ISDN
ISDN
RS-422
6-71