Replacement for RS-550-ACAA: Drop-In Alternatives We Stock
Looking for a replacement for the RS-550-ACAA (RS-550-ACAA - Cooler Master 550-Watts ATX12V Power Supply)? Pro Disk Network ships drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the RS-550-ACAA
| SKU | RS-550-ACAA |
|---|---|
| Product | RS-550-ACAA - Cooler Master 550-Watts ATX12V Power Supply |
| Stock status | In Stock |
| Detail page | View RS-550-ACAA › |
Drop-in replacements for RS-550-ACAA
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
RS-850-EMBA - Cooler Master Real Power Pro 850-Watts ATX12V Power Supply
SKU: RS-850-EMBA
Price: $131.58
EA-550 - Antec Earthwatts GREEN 550-Watts 80-Plus Bronze ATX 12V 2.4 Power Supply
SKU: EA-550
Price: $196.49
220-G3-0550-Y1 - EVGA SuperNOVA 550 G3 550-Watts 80 Plus Gold Certified Fully Modular Eco Mode with HDB Fan Power Supply
SKU: 220-G3-0550-Y1
Price: $250.53
220-B3-0550-V1 - EVGA 550 B3 550-Watts 80 Plus Bronze Fully Modular Eco Mode Power Supply
SKU: 220-B3-0550-V1
Price: $262.32
100-N1-0550-L1 - EVGA 550 N1 550-Watts ATX 12V / EPS 12V Power Supply
SKU: 100-N1-0550-L1
Price: $282.20
220-G2-0550-Y1 - EVGA SuperNOVA 550 G2 550-Watts 80 Plus Gold Certified Fully Modular Eco Mode Power Supply
SKU: 220-G2-0550-Y1
Price: $318.32
S12G-550 - Seasonic SSR-550RT 550-Watts 80-Plus Gold ATX 12V Power Supply with Active PFC
SKU: S12G-550
Price: $432.28
220-GS-0550-V1 - EVGA SuperNOVA 550 GS 550-W Continuous Power, ECO Mode Fully Modular NVIDIA SLI and Crossfire Ready 80+ Power Supply (Gold)
SKU: 220-GS-0550-V1
Price: $331.58
MPW-8001-ACAAG-US - Cooler Master G 800-Watts 100-240V 80 Plus Gold ATX Power Supply
SKU: MPW-8001-ACAAG-US
Price: $417.54
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.