Epson Stylus SX125, TX125 continuous ink supply system
New Epson Stylus SX125, TX125 continuous ink supply system is pretty complicated beast compared to regular Epson continuous system. CISS's AR chips are connected to the adapter with white electric cable. Original chips are inserted in the adapter which is powered from the USB cable.
To reset the level of ink (the cross on the cartridge in the status monitor when one or more cartridges are "empty") you'll need to push the button on the adapter. Video manual on how to install this type of continuous system is located here Epson Stylus S22, SX125, TX125, TX320, SX420, TX420 CISS installation.

There is a alternative solution with batteries and combo reset chip.


Looks like a better solution, but we'll have to wait for it to hit the market.
Epson did everything to make it harder for everyone who wants to install continuous system on this model. If you wonder how to easily move (or remove) printhead on Epson Stylus SX125, TX125 printer check this page How to remove Epson Stylus SX125 printhead.