Thanks again for the replies. I had a link to the product I bought in my first post. I measured each line. Vcc +5 measures +5. Vcc 3.3 measures 3.288 Rx and Tx measure just under 5 volts each. I used the ground as reference when measuring each pin.
Something sounds wrong with this device.
I have another USB to serial that has a jumper one for +5 and other for +3.3 so they measure correctly. When +5 is enabled I measure Rx/Tx juts under 5 volts and when I enable +3.3 I measure just under 3.3 volts for the Rx/Tx using ground for reference.