FTDI Programmer 5v vs 3.3v for ESP8266 Context

I currently have a Sonoff S20 plug that is acting up and needs to be reflashed. (Over the air updates arent working)
The S20 plug is based on an ESP8266 chip.

Reading the documentation it states that you need a FTDI serial programmer @ 3.3v to get it done.
Instructions below

https://github.com/arendst/Sonoff-Tasmota/wiki/Hardware-Preparation

I am looking at this programmer here

http://www.ebay.com.au/itm/FTDI-FT232RL-USB-to-TTL-Serial-Converter-Adapter-5V-and-3-3V-For-Arduino-RZ/371993408316?epid=4004086862&amp;hash=item569c88f33c:g:tdkAAOSw5VFWMM31

Question

The ebay item states its 3.3v AND 5v, I cant see two pinouts that supply different voltages.  If I was going to power this from my PC USB port is this thing going to output 5v and damage the ESP?
How am I supposed to get 3.3V out while connected to my PC?
I found a better picture that shows the jumper from above. I can see now that there is a jumper to toggle between 5V and 3.3V

http://buyhere22.com/components/usb-ttl-ft232rl-pinout.png