Case Power Supply Deals & Case Power Supplies for Sale

Useful if your desktop PC or workstation is showing signs of an underpowered or failing PSU, or if you're building a mid-range system and need a reliable wattage buffer for your components. Buy Now at Newegg

A straightforward upgrade path for anyone running an HP Z420 workstation who needs to replace a failing PSU or add headroom for more demanding components, since this is a direct OEM fit rather than a generic alternative. Buy Now at Newegg

Rack-level networking gear like the EX4300 series draws a lot of power, and having a spare or replacement 750W AC power supply on hand is standard practice for anyone running Juniper switches in a production environment. Worth looking at if you're managing EX4300 infrastructure and need a reliable OEM unit rather than a third-party alternative. Buy Now at Newegg

A 650W DC-input power supply, the DS650DC-3 is built for telecom, industrial, and data center environments where AC mains power isn't available — not a typical consumer unit. Newegg has it listed, which is one of the few places you'd find this type of specialty hardware outside of enterprise procurement channels. Buy Now at Newegg

A repurposed server PSU that outputs 300W of clean, stable power, which makes it a practical option for PC builders, DIY electronics projects, or anyone who needs a reliable bench power supply on the cheap. Buy Now at Newegg

A direct replacement for DVR and NVR systems that use the DPS-200PB-205A form factor, so it's primarily useful if your security recorder's power supply has failed and you need a like-for-like swap rather than a full unit replacement. Buy Now at Newegg

Buying moving head lights in bulk usually means sourcing power supplies separately, and this 10-pack covers both 12V and 24V compatibility, which saves you from needing two different units on hand for mixed setups. Buy Now at Newegg

Upgrading or replacing the power supply in an HP XW8200 workstation is tricky since these older towers require a specific form factor, and this 600W unit is built to fit that chassis without modification. Buy Now at Newegg

Designed for Sun/Oracle server systems, this is the kind of component you'd need when replacing a failed PSU in a 490W-rated rack unit rather than building from scratch. Buy Now at Newegg

Newegg has the RH5885H V3 EPW2000-12A Power Supply listed for those running or building out server infrastructure — this is a 2000W enterprise-grade unit designed for high-density rack servers, not a consumer desktop PSU. Buy Now at Newegg

Rack-mounted networking gear often needs replacement or redundant power supplies, and this Juniper unit is purpose-built for their switches and routers rather than being a generic aftermarket option. Buy Now at Newegg

A straightforward pick for IT admins or network technicians needing a replacement or spare power supply for compatible Aruba networking hardware, where sourcing the correct OEM part matters for warranty and support purposes. Buy Now at Newegg

A server power supply replacement for the Dell PowerEdge C2100, useful if you're maintaining or refurbishing one of these rack servers and need a compatible 750W unit without sourcing through enterprise channels. Buy Now at Newegg

A redundant power supply swap-in for 1U rackmount servers where uptime matters, so if one unit fails the system keeps running without intervention. Worth having on hand if you're running servers in environments where downtime carries a real cost. Buy Now at Newegg

Designed for enterprise-level HP and Hitachi storage arrays, this replacement power supply is a fairly niche component that only matters if you're maintaining aging XP20000 or XP24000 infrastructure and need a spare or failed unit replaced. Buy Now at Newegg

A solid option if you're replacing or upgrading the power supply in a 1U rackmount server build, where standard ATX units won't physically fit. Buy Now at Newegg

A solid pick for server builders or workstation setups that need high-wattage redundant power in a 1U rack form factor, where downtime from a single PSU failure isn't an option. Buy Now at Newegg

A high-wattage PSU like this is aimed at crypto miners running multiple GPUs in a single rig, where a standard consumer power supply would fall short on available power. At 1,800W, it can handle the sustained draw that multi-card mining setups typically demand. Buy Now at Newegg

Designed specifically for the Raspberry Pi 5, this module handles USB-C Power Delivery input so you're not hunting for a compatible adapter separately — useful if you're setting up a Pi 5 and want a cleaner, purpose-built power solution. Buy Now at Newegg