A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a computer.
Cooler Master MWE Gold 550 - V2 Full Modular power supply unit 550 W 24-pin ATX ATX Black

Cooler Master MWE Gold 550 - V2 Full Modular power supply unit 550 W 24-pin ATX ATX Black

Cooler Master
£74.99
Cooler Master MWE 550 Bronze 230V V2 power supply unit 550 W 24-pin ATX ATX Black

Cooler Master MWE 550 Bronze 230V V2 power supply unit 550 W 24-pin ATX ATX Black

Cooler Master
£60.99
Seasonic CORE GX-650 power supply unit 650 W 20+4 pin ATX ATX White

Seasonic CORE GX-650 power supply unit 650 W 20+4 pin ATX ATX White

Seasonic
£118.99
Seasonic CORE GX-850 power supply unit 850 W 20+4 pin ATX ATX White

Seasonic CORE GX-850 power supply unit 850 W 20+4 pin ATX ATX White

Seasonic
£138.99
Seasonic CORE GX-750 power supply unit 750 W 20+4 pin ATX ATX White

Seasonic CORE GX-750 power supply unit 750 W 20+4 pin ATX ATX White

Seasonic
£128.99
Cisco PWR-RPS2300, Refurbished power supply unit 1U Black

Cisco PWR-RPS2300, Refurbished power supply unit 1U Black

Cisco
£612.99
GIGABYTE P750BS Power Supply - PCI-E 6+2 Pin x 4, 80 PLUS Bronze, 120mm Fan, ATX compatible, EU Plug

GIGABYTE P750BS Power Supply - PCI-E 6+2 Pin x 4, 80 PLUS Bronze, 120mm Fan, ATX compatible, EU Plug

Gigabyte
£58.99
GIGABYTE P750BS Power Supply - PCIe 5.0, 80 PLUS Bronze, 120mm Fan, ATX compatible, UK Plug

GIGABYTE P750BS Power Supply - PCIe 5.0, 80 PLUS Bronze, 120mm Fan, ATX compatible, UK Plug

Gigabyte
£55.99
Corsair RM850e power supply unit 850 W 20+4 pin ATX ATX White

Corsair RM850e power supply unit 850 W 20+4 pin ATX ATX White

Corsair
£121.99
QNAP PWR-SET-DT04 power supply unit 250 W Grey

QNAP PWR-SET-DT04 power supply unit 250 W Grey

QNAP
£385.99
MSI MAG A550BN UK PSU '550W, 80 Plus Bronze certified, 12V Single-Rail, DC-to-DC Circuit, 120mm Fan, Non-Modular, Sleeved Cables, ATX Power Supply Unit, UK Powercord, Black'

MSI MAG A550BN UK PSU '550W, 80 Plus Bronze certified, 12V Single-Rail, DC-to-DC Circuit, 120mm Fan, Non-Modular, Sleeved Cables, ATX Power Supply Unit, UK Powercord, Black'

MSI
£50.99
MSI MAG A650BN UK PSU '650W, 80 Plus Bronze certified, 12V Single-Rail, DC-to-DC Circuit, 120mm Fan, Non-Modular, Sleeved Cables, ATX Power Supply Unit, UK Powercord, Black'

MSI MAG A650BN UK PSU '650W, 80 Plus Bronze certified, 12V Single-Rail, DC-to-DC Circuit, 120mm Fan, Non-Modular, Sleeved Cables, ATX Power Supply Unit, UK Powercord, Black'

MSI
£62.99