I was having trouble figuring out how the cables are hooked up. The Zem came with a USB cable and a serial cable. Does the serial cable connect to the interface (box with the chip strapped to it) to the labjack and then from the labjack the USB cable connects to the laptop. I was searching and people said they needed a Belkin USB to serial adapter. Or do I not use the serial port on the labjack and hook both the serial and USB cables to the laptop. Thanks.