The CSW2012-HX is an update to the CSW2012-H, Take a look at the Magnum Inverters page
*HERE* You should find this link to your manual
https://www.magnum-dimensions.com/si...W2012-X%29.pdf
The manual starts with this explanation:
"Addendum for use with CSW2012-HX
The CSW1012-HX comes with hardwire AC Input and hardwire AC Output cable with a Display Port for Remote Display. An Ignition Start Port is added to control the unit ON and OFF by using an external signal and the USB output port is removed. Other feature and function are the same as the CSW2012-X.
Use the following section to understand the unit’s features of CSW2012-HX in replace of “1.1 Features” on page 1 and 2 of the CSW2012-X Owner’s Manual."