@jlacharite1

Your TC-710 should not be that kind used 20-pin type as main connector (only those more than two decades old used that). A standard one will do it.

If you are not going to add powerful graphics card for gaming, this one should be good enough at very cheap price:

https://www.newegg.com/evga-400-n1-100-n1-0400-l1-400w/p/N82E16817438038?Description=evga 400w PSU&cm_re=evga_400w PSU-_-17-438-038-_-Product&quicklink=true

Bought one half year ago at a higher price and happy about it. It doesn't have 110V-220V slider switch or power on/off button like in the picture, that is why it is cheaper than others. I like the idea of that and it reflected in a lower price. Through the life time of the PC, it will not be used outside of the US and I never used the power on/off button at the power supply, always software controlled.


If you will add a graphics card, more powerful models also have very competitive prices.

@William_mk2

Your pictures really can help non-techincal people to DIY.
For me, it is only the matter of taking out the four screws at the back of the PSU and then record a video with cellphone/cam corder which connector is pulled out from where.

@jlacharite1, one very important thing is you have to pressed on the tip of the connector latch hard to open it so you can pull the 24-pin connector from the motherboard at the same time, so is the other 4-pin or 6-pin PCIe connector to the motherboard. Otherwise, you cannot remove the connector(s). That's the most diffcult/important part of the whole PSU replacement process.

Other than that, removing SATA power connectors to HDD/SSD or DVD drive is easy.