[Update @ 1/7/2016] Alternative adapter I bought another adapter from T-Power, with much more current, same 4 pin connector. See attached two black and white photos for size comparison and specifications. As you can see, this 12.5A adapter is much larger and heavier, similar in size to the original Cintiq adapter (6.67A). As long as the adapter has the same voltage with an equal and higher force, you're good to go. [Update @ 2015-12-31] Adapter not working after 1 year use. This adapter initially works with both the Wacom Cintiq 21UX DTZ-2100G and the Wacom Cintiq 22HD. .A year later the adapter is dead, the power indicator is off too. The power adapter gets very hot. I think the problem is bad capacitors (two 1000uF 16V), see attached photo.
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