What kind of PSU does the TC-866 have? Also, same question for the TC-875-UR12.

Joe45a

Is the PSU proprietary or is it a normal ATX PSU that I can upgrade. 

I'm thinking of getting either the TC-866 or TC-875 but want to know first.

I would like to add a graphic card to it so I need to know.  Thanks

ttttt

@Joe45a,
Standard ATX PSU is  85mm x 150mm  at the back panel of the PC.
Flex ATX PSU is 40.5 mm X 91.5 mm 

If TC-866 or TC-875 has the dimension not conform to the above dimension, then the PSU is probably proprietary.
I don't own a TC-866 or TC-875. Maybe the Trailblazers or those who own the PCs can measure the PSU and give you definite answer.

billsey

The TC-866 uses a Flex ATX supply, 220W, 300W or 500W depending on model. The TC-875 looks like it has a standard ATX supply, 300W.

vizitor

TC-875-UR13 has a ATX12VO PSU with 2 connectors: 4 pins to "ATX 12V" & 5 pins to "ATX power"