INTRODUCTION  The USB serial driver currently supports a number of different USB to  serial converter products, as well as some devices that use a serial  interface from userspace to talk to the device.  See the individual product section below for specific information about  the different devices.CONFIGURATION  Currently the driver can handle up to 256 different serial interfaces at  one time.   If you are not using devfs:    The major number that the driver uses is 188 so to use the driver,    create the following nodes:	mknod /dev/ttyUSB0 c 188 0	mknod /dev/ttyUSB1 c 188 1	mknod /dev/ttyUSB2 c 188 2	mknod /dev/ttyUSB3 c 188 3		.		.		.	mknod /dev/ttyUSB254 c 188 254	mknod /dev/ttyUSB255 c 188 255  If you are using devfs:    The devices supported by this driver will show up as    /dev/usb/tts/{0,1,...}  When the device is connected and recognized by the driver, the driver  will print to the system log, which node(s) the device has been bound  to.  SPECIFIC DEVICES SUPPORTEDConnectTech WhiteHEAT 4 port converter  ConnectTech has been very forthcoming with information about their  device, including providing a unit to test with. This driver will end up  being fully supported.  Current status:    The device's firmware is downloaded on connection, the new firmware     runs properly and all four ports are successfully recognized and connected.    Data can be sent and received through the device on all ports.    Hardware flow control needs to be implemented.  For any questions or problems with this driver, please contact Greg  Kroah-Hartman at greg@kroah.comHandSpring Visor, Palm USB, and Cli