Dell Dimension 8400 Replacement 400W Power Supply Replacement. The replacement power supply is compatible with several Dell Dimension models including the 8400 series and 4700 series. This replaces P/N: F4284 and K8956. This PSU has a 20+4 motherboard power connector, meaning you can use it with both 20-pin and 24-pin motherboard power sockets! This power supply can power almost any modern motherboard with ease. If you've been looking around for a replacement for your psu, this not only will do the job but it's an upgrade over the original and will fit perfectly..
This power supply is a universal replacement and it will let you swap out your Dell NPS-350CB A PSU among other models. If your PSU on a Dell 8400 is ready to fail, swap it out with a replacement and enjoy the upgrade. Other models that are compatible to be swapped out with this are: Y2103, G3148, Y2682, C3760, PS-6311-1DFS, NPS-305AB C, PS-6311-1DS, NPS-305BB C