Case Power Supply Deals & Case Power Supplies for Sale

This power supply unit suits home lab enthusiasts or small business owners running dense server racks that need reliable, high-wattage output without a full data center budget. The redundant design also means less downtime risk if you're hosting anything mission-critical. Buy Now at Newegg

This power supply suits anyone building or repairing a server rig where a reliable 500W unit matters more than aesthetics or extra bells and whistles. Newegg carries it as a straightforward replacement part, useful for keeping older server hardware running without hunting down discontinued OEM stock. Buy Now at Newegg

Runs quiet and efficient enough for a mid-range gaming rig, and the 80 Plus Gold rating means less wasted power (and heat) compared to standard PSUs. Worth a look if you're building or upgrading a system without a lot of power-hungry components. Buy Now at Newegg

This power supply is a direct replacement for the HP Z230 workstation, so it's a good pick if you're repairing or upgrading an existing tower rather than trying to fit a generic ATX unit. Newegg has it in stock for anyone who needs an exact-match part instead of hunting through third-party listings. Buy Now at Newegg

Data center admins or small business server setups needing failover protection will find this useful, since redundant power supplies keep your server running even if one unit fails. Buy Now at Newegg

Newegg carries this Optiplex SFF power supply for anyone whose small form factor Dell has died or is struggling to keep up, and it's built to the exact specs the system needs rather than a generic universal fit. Buy Now at Newegg

Anyone whose HK401-11FP or similarly numbered unit has died from a failed power supply can replace just that component instead of the whole device, saving you the cost of a full replacement. Buy Now at Newegg

This power supply suits anyone maintaining or repairing an IBM X3400M3 or X3500M3 server who needs an exact-fit replacement rather than a generic substitute. It's a straightforward option for keeping older enterprise hardware running without sourcing a full system upgrade. Buy Now at Newegg

Anyone dealing with a desktop that won't power on may just need a straightforward fix like this rather than a whole new machine, and it's built to match Dell Inspiron specs so you don't have to guess on compatibility. Buy Now at Newegg

Older desktops and budget rebuilds with modest power needs are the main fit here, since 420W covers basic components without paying for wattage you'll never use. Newegg carries this as a straightforward replacement option if your current PSU has died and you don't need anything fancier than standard ATX connectors. Buy Now at Newegg

Data centers running HPE Aruba's CX 6400 switch series need this power supply for redundancy or replacement, since it's built to match the chassis's exact power specs rather than working as a generic substitute. Newegg carries it for network admins who'd rather not wait on backorder from Aruba directly. Buy Now at Newegg

Data center techs and network admins swapping out failed PSUs will want this on hand, since it's built specifically for compatible Fiberhome equipment rather than a generic replacement. Buy Now at Newegg

Anyone building or upgrading a rig with power-hungry components will want the headroom this 865W supply provides without overspending on wattage you won't use. Buy Now at Newegg

Data center admins and server builders needing redundant power will want this for its hot-swap capability, letting you replace the unit without shutting the system down. Buy Now at Newegg

A compact modular PSU designed for small form factor and 1U rackmount builds where space is the primary constraint — the modular cabling helps keep tight cases manageable. Buy Now at Newegg

Building a higher-end gaming rig with a power-hungry GPU calls for headroom, and 850W gives you room to upgrade components later without swapping the whole supply out. Buy Now at Newegg

Anyone running a power-hungry desktop build or replacing a failing PSU in a Dell system will want the specs to match exactly, and this 240W unit is built to Dell's factory specifications for a proper fit. Newegg carries it for those needing a straightforward, compatible replacement without hunting down a used part. Buy Now at Newegg

Server admins running critical workloads will want this for the redundancy alone, since a second power supply keeps things running if one fails instead of taking your whole PowerEdge box down with it. Buy Now at Newegg

Restaurant and retail POS setups running on HP RP8400 or RP8420 terminals will want this on hand as a replacement, since keeping a spare power supply nearby means less downtime when the original fails. Newegg carries it for those needing an exact match rather than a generic substitute. Buy Now at Newegg