Case Power Supply Deals & Case Power Supplies for Sale

A straightforward replacement or upgrade option for Dell T5500 and T5400 workstation owners who need a high-wattage PSU that fits without modifications. At 875W, it has enough headroom for builds running multiple drives, high-end GPUs, or other power-hungry components. Buy Now at Newegg

Enterprise networking gear like the EX9214 runs on redundant power configurations, and this supply is built to slot into that chassis to keep it online if a primary unit fails. A practical pickup for network engineers or IT teams maintaining Juniper modular switches in a data center or large campus environment. Buy Now at Newegg

A solid pick if you're building or upgrading a mid-to-high-end PC and want a power supply with 80 Plus Gold efficiency certification, which means less wasted energy as heat and lower electricity draw under load. Buy Now at Newegg

The fully modular design means you only connect the cables your build actually needs, which keeps airflow cleaner and cable management simpler compared to semi-modular or non-modular units. At $87, that's $23 off the $110 list price for an 80 PLUS Gold-rated 850W PSU. Buy Now at Newegg

A straightforward pick for network administrators managing Juniper EX or QFX series switches who need a verified OEM replacement or spare power supply unit rather than a third-party alternative. Buy Now at Newegg

A straightforward pick for anyone running a Dell T300 tower server who needs a replacement or spare power supply, since sourcing OEM server PSUs can get expensive fast. Buy Now at Newegg

A straightforward drop-in replacement for the standard power supply in a Dell Optiplex XE2 Small Form Factor desktop, useful if yours has failed or you need a spare on hand for a business environment running multiple units. Buy Now at Newegg

Handy for powering devices that require different voltage inputs, this 120W supply suits hobbyists, lab setups, or anyone who regularly works with hardware that doesn't run on a single standard voltage. Buy Now at Newegg

A straightforward pick for IT teams maintaining Dell EqualLogic SAN arrays who need a replacement or spare power supply unit to keep their storage infrastructure running. Buy Now at Newegg

A fully modular SFX power supply at 650W covers most compact PC builds, and the modular cabling means you only connect what you actually need, which helps with airflow in tight cases where every bit of space matters. Buy Now at Newegg

A fully modular SFX power supply at 650W covers most compact PC builds, and the modular cabling means you only connect what you actually need, which helps with airflow in tight cases where every bit of space matters. 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 rack-level power supply swap for Juniper networking hardware, this 1100W AC unit suits IT teams maintaining or expanding existing Juniper infrastructure who need a direct replacement rather than a third-party workaround. Buy Now at Newegg

A straightforward swap for anyone replacing a dead or underpowered unit in a Lenovo M70E, M75E, M81, or M91P desktop, since the compatibility is already matched to those specific models. Buy Now at Newegg

A solid option if you're maintaining or upgrading Juniper network hardware and need a replacement or spare power supply unit — these are typically purchased by IT administrators or network engineers managing enterprise infrastructure. Buy Now at Newegg

A straightforward option for anyone building or repairing a server on a budget, since 550W server-grade PSUs from OEM suppliers like Inspur don't often show up at consumer retailers. Buy Now at Newegg

Older Dell GX-series desktops use a proprietary power supply form factor, so if yours has failed or is showing signs of instability, this is the kind of direct replacement that saves you from compatibility guesswork. Buy Now at Newegg

A workstation power supply swap worth considering if your Dell tower's original PSU has failed and you want a direct OEM replacement rather than a third-party unit that may require adapter cables or firmware workarounds. Buy Now at Newegg

Server power supplies repurposed for desktop or workstation use are a niche but practical way to get high-wattage, reliable power at a fraction of what a consumer PSU costs, and the breakout board here handles the wiring conversion for you. Worth looking at if you're running a power-hungry GPU mining rig, high-core-count workstation, or any build that needs sustained 1,400W without spending on a premium consumer unit. Buy Now at Newegg