Power Supplies

0MJ046 Dell 2100-Watts Power Supply for PowerEdge 1855, 1955

£254.87 Inc. VAT
£212.39 Excl. VAT
(0 Reviews)

0MPCF0 Dell 300-Watts Power Supply for Vostro 220 / 260 / 400

£70.15 Inc. VAT
£58.46 Excl. VAT
(0 Reviews)

0MXW2T Dell 300-Watts PFC Power Supply for Inspiron 580

£180.12 Inc. VAT
£150.10 Excl. VAT
(0 Reviews)

0N0FNY Dell Aruba 350-Watts AC Power Supply

£202.27 Inc. VAT
£168.56 Excl. VAT
(0 Reviews)

0N1WJD Dell 850-Watts ATX Power Supply for Alienware Area 51 R2

£302.71 Inc. VAT
£252.26 Excl. VAT
(0 Reviews)

0N365P Dell 305-Watts Power Supply for GX745/755 Tower

£95.18 Inc. VAT
£79.32 Excl. VAT
(0 Reviews)

0N619D Dell Low Voltage Power Supply for 3130CN Printer

£140.65 Inc. VAT
£117.21 Excl. VAT
(0 Reviews)

Power Supplies for Desktop PCs, Workstations and Servers

The right Power Supply is more than a wattage rating printed on a specification sheet. It determines how electrical power reaches the components inside a computer and must match the system's physical design, connector requirements, and expected load. From replacing an aging desktop PSU to sourcing a proprietary server power module, choosing compatible hardware is essential.

Computer Power Supplies for Every Build

For desktop computers, ATX power supplies are a common choice, while compact systems may require SFX, TFX, Flex ATX, or other form factors. Gaming PCs and high-performance workstations can demand substantial power capacity and dedicated GPU connectors, whereas office systems may have considerably lower requirements.
Features such as modular cabling, 80 PLUS efficiency, active PFC, PCIe power connectors, EPS connectors, multiple output rails, and quiet cooling can influence the suitability of a PSU for a particular build. Modular power supplies are especially useful when clean cable management and airflow are priorities.
Enterprise hardware introduces different requirements. Server power supplies can use hot-swappable modules, redundant configurations, and proprietary form factors. In compatible servers, dual or multiple PSUs can provide power redundancy, allowing maintenance or a failed module to be handled without necessarily taking the entire system offline.

Leading Power Supply Brands

Our selection can include products from well-known manufacturers such as Corsair, Seasonic, EVGA, Thermaltake, Cooler Master, be quiet!, SilverStone, FSP, Antec, ASUS, Super Flower, Delta, Dell, HPE, Lenovo, and Intel. These brands cover consumer PCs, gaming systems, professional workstations, rack servers, and enterprise computing hardware.

Match the PSU to the Hardware

When selecting a replacement power supply, compatibility goes beyond wattage. Check the form factor, input voltage, output ratings, motherboard connector, CPU power connection, graphics-card requirements, drive connectors, dimensions, and manufacturer-specific specifications before installation.
Browse our Power Supplies collection for desktop PSUs, modular units, server power modules, replacement supplies, and specialized power hardware. Whether you're building a new PC, upgrading a workstation, or maintaining server equipment, find a PSU suited to the hardware it needs to power.