Case Power Supply Deals & Case Power Supplies for Sale

Useful for replacing or upgrading a 5V power supply in electronics projects, small appliances, or DIY setups where a reliable regulated voltage source is needed. Buy Now at Newegg

A straightforward option for anyone building or repairing a budget desktop PC that doesn't need a high-wattage supply, the 300W output covers basic office or older gaming builds without paying for headroom you won't use. Buy Now at Newegg

A reliable option if you're running a 24V DC system that needs a stable, dedicated power source, such as LED strips, CNC controllers, or other electronics workbenches setups requiring consistent voltage under load. Buy Now at Newegg

A compact form factor PSU that fits slim 1U rackmount cases where standard ATX units won't physically fit, so it's mainly for builders working with server chassis or small form factor systems with tight space constraints. Buy Now at Newegg

A dedicated power supply for Chia mining rigs, this 1,000W unit suits anyone running multiple hard drives or SSDs in a proof-of-space mining setup where stable, high-wattage power delivery matters. Buy Now at Newegg

Handy for PC builders running dual power supply setups, this adapter lets both PSUs power on simultaneously from a single switch so you don't have to manually manage two separate units. Buy Now at Newegg

A straightforward solution for Dell workstation or server owners who need to add GPU power capacity without replacing the entire power supply unit. Buy Now at Newegg

A straightforward upgrade or replacement option for Dell desktop owners whose original PSU has failed or whose system needs more wattage to support added components like a discrete GPU. Buy Now at Newegg

A reliable option if you're building or maintaining a server and need a power supply from a known enterprise brand without sourcing it through commercial IT channels. Buy Now at Newegg

A straightforward pick for system builders or IT professionals working on industrial control systems, embedded computing setups, or small form factor servers that need a reliable, purpose-built PSU rather than a standard consumer unit. Buy Now at Newegg

Designed as a direct replacement for HP DX2300 series desktops, this power supply is mainly useful if your existing unit has failed and you want to restore the system without hunting down a compatible third-party option. Buy Now at Newegg

Replacing a failed power supply in an HP Pavilion 550-101a is the main use case here, and this is a direct-fit unit for that specific model rather than a generic PSU you'd need to modify or adapt. Buy Now at Newegg

A 495W desktop power supply pulled from enterprise hardware, the DPS-495CB-1 A is a practical option if you need a replacement unit for a compatible workstation or are building a budget system and want a reliable OEM part at a lower cost than a retail-boxed alternative. Buy Now at Newegg

A straightforward replacement for anyone whose Dell Optiplex tower has lost power or is showing signs of PSU failure, and sourcing an OEM-spec unit keeps you from having to verify compatibility with a third-party option. Buy Now at Newegg

A breakout board like this is useful if you're running a multi-GPU mining rig and need to distribute power from a single ATX server PSU across several components without cobbling together adapters. Buy Now at Newegg

A handy diagnostic tool for anyone building or troubleshooting a desktop PC, letting you check whether your power supply is functioning without needing to have the whole system assembled. Buy Now at Newegg

Rack-mount networking hardware like Juniper switches and routers often requires purpose-built power supplies, and this 920W unit is designed as a direct replacement or spare for compatible Juniper systems rather than a general-purpose PSU. Worth keeping in mind if you're maintaining or expanding a Juniper network deployment and need a manufacturer-matched power supply. Buy Now at Newegg

A solid option if your gaming PC build needs a reliable power supply without going overboard on wattage, since 80 Plus Gold certification means it runs efficiently and wastes less power as heat compared to lower-rated units. Buy Now at Newegg

A compact form factor PSU that fits slim 1U rackmount cases where standard ATX units won't physically fit, so it's mainly for builders working with server chassis or small form factor systems with tight space constraints. Buy Now at Newegg