I could be wrong, but my interpretation of the text bellow, from he ZWO website, is that the the 12V supply is required for the older version:
Compared to the old version of the EAF focuser, the main change of the 5V EAF is to eliminate the need for a 12V power supply port. Now you can directly connect it to your camera, laptop or ASIAIR PRO via the USB 2.0 port and use a cable for both data transmission and power supply! This makes the cable management much easier, as well as reducing the need for additional power outlets.
Argh! I just realised that little 12-5V converter came with my ASI-AIR, not the EAF, so I can't include it with the sale as it serves no purpose.
Sorry for the confusion
Argh! I just realised that little 12-5V converter came with my ASI-AIR, not the EAF, so I can't include it with the sale as it serves no purpose.
Sorry for the confusion