Power Supply for Dell Dimension 4700 8400 F4284 Dell Part K8956 Dell Part K8956 Specifications: Main Connector: 20+4Pin +12V Rails: Single Over Voltage Protection: Input Voltage: 115 / 230 V Input Frequency Range: 50/60 Hz Output: +3.3V@13A, +5V@13A, +12V1@16A, [email protected], [email protected], and [email protected] Rise time: Less than 70ms Hold-up Time: 17ms Minimum at Nominal Input Voltage Replacement PSU for Dell Dimension 4700 8400 F4284 Dell Part K8956 Dell Part P8401 Compatible with most motherboards! The replacement power supply for your Dell Dimension 4700 8400 F4284 Dell Part K8956 Dell Part P8401 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! Replaces common PC power supplies!