i have always ran into trouble trying to find compatible USB to RS232 serial device. and not being able to program anything from a EPROM to a FPGA because my laptop fails to have a Serial or LPT. so what i am left with is carrying 2 bags, one with all the wires / adapters , the other carrying 3 laptops. There has to be a device that can be built to program multiple devices and having the range of full connectivity to the device, usb, 9pin Dsub 25pin Dsub, RS232 RS485 RS422. Built in TTL 3.3V - 5V . all powered under one portable device with a nice display 1024X768 or larger?