Package usb-modeswitch: Information

USB_ModeSwitch is (surprise!) a mode switching tool for controlling
"flip flop" (multiple device) USB gear.
Several new USB devices (especially high-speed wireless WAN stuff, there
seems to be a chipset from Qualcomm offering that feature) have their
MS Windows drivers onboard; when plugged in for the first time they act
like a flash storage and start installing the driver from there.
After that (and on every consecutive plugging) this driver switches the
mode internally, the storage device vanishes (in most cases), and a new
device (like a USB modem) shows up. The WWAN gear maker Option calls
that feature "ZeroCD (TM)".

Needed for MTS (and others) branded e1550 modems.