A:AnswerI believe you just need to look up "Dell 24 to 6 pin motherboard adapter" and you should find what you need. If the 4 pin port is near the 6 pin port, it shouldn't need to be used to function (I've used some old Lenovo motherboards with a 4 pin port near the ATX power port and they don't need to be used to be plugged in). If the 4 pin is near the cpu or there is no other 4 pin port on the motherboard, that's the cpu power which you use the standard CPU power cable on this psu with.
A:AnswerThis power supply will fit in any Mid-Size tower. It should fit in an XPS 8910 Case, you will have to remove the old power supply from its housing on the XPS and then place the new power supply in the same position. Take a photo of how it was originally before you remove the old one so you know exactly how the new one needs to be installed.
-Peter
Digitalmonkeygaming.com
A:AnswerCyberpower tends to use standard, off the shelf parts, so most likely yes. That said, they make multiple models - since you don't list a specific one, double checking with them is probably a good idea.