Summary: Using this to communicate with PIC micro-controllers using a CCS serial port monitor that is built into their compiler and it is working perfectly. Install the drivers and the program detects the comport properly. The only thing that I don't like about it is that it needs to install the drivers every time you plug it into a different usb port and each usb port is then a different comport, so if you switch usb ports remember to change the setting in you serial port...
Summary: Unit seems all right and it's recognized by the computer. I can't use it however. I bought this to program a HAM radio, which has a COM interface cable. For some reason (I haven't much investigated yet), it just won't do anything. I tried several things, couldn't get the computer to see the HAM radio. I haven't tried anything else and tossed it away. I like my stuff to just work, and this apparently didn't for me.
Summary: Delivery in time, original packaging, containing quick installation manual and driver disk - which I didn't need, because the converter just plugged in and uses the same driver as my old TU-S9. Now both work parallel and give me GPS and AIS date on my computer screen.
Summary: This RS-232 converter works very well on various devices, including an older Palm Pilot and various data loggers which use an RS-232 interface. The included drivers install easily and Windows looks at it like a Com 3 port.
Summary: Have tried similar products which totally failed, this one did exactly what I needed. Transferring CNC programs to a machine from an XP laptop using a DOS file transfer utility, and loading programs into a smart relay, from a 64 bit Vista laptop. Highly recommended!