Replacement for FSP400-50FDB: Drop-In Alternatives We Stock
Looking for a replacement for the FSP400-50FDB (FSP400-50FDB - Sparkle Power FSP400FDB-B204 400W 80 PLUS Gold FLEX Switching Power Supply w/ Active PFC)? 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 FSP400-50FDB
| SKU | FSP400-50FDB |
|---|---|
| Product | FSP400-50FDB - Sparkle Power FSP400FDB-B204 400W 80 PLUS Gold FLEX Switching Power Supply w/ Active PFC |
| Current price | $307.71 |
| Stock status | In Stock |
| Detail page | View FSP400-50FDB › |
Drop-in replacements for FSP400-50FDB
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.
FSP400-60AGB - Sparkle Power FSP400AGB-B204 400W 80 PLUS Bronze ATX 12V Switching Power Supply w/ Active PFC
SKU: FSP400-60AGB
Price: $165.08
FSP500-50FDB - Sparkle Power FSP500FDB-B204 500W 80 PLUS Gold FLEX Switching Power Supply w/ Active PFC
SKU: FSP500-50FDB
Price: $382.59
9PA2201168 - Sparkle Power 220/250Watts 80Plus Flex ATX 20+4-Pin 12V Switching Power Supply
SKU: 9PA2201168
Price: $288.62
SPI220LE - Sparkle Power 220/250Watts 80Plus Flex ATX 20+4-Pin 12V Switching Power Supply
SKU: SPI220LE
Price: $307.59
SPI460PFB2 - Sparkle Power 460-Watts ATX 12V 80 Plus Switching Power Supply for X-Series
SKU: SPI460PFB2
Price: $134.13
FSP300-60AGB - Sparkle Power FSP300AGB-B204 300W 80 PLUS Bronze ATX 12V Switching Power Supply w/ Active PFC
SKU: FSP300-60AGB
Price: $154.59
511778-001 - HP 750-Watts 100-240V 80 Plus Gold Switching Power Supply for ProLiant DL385 G5
SKU: 511778-001
Price: $61.05
FSP700-80PSA - Sparkle Power 700-Watts ATX12V 24-Pin 80 Plus Bronze Power Supply
SKU: FSP700-80PSA
Price: $331.58
MPY-7501-SFHAGV-WU - Cooler Master V SFX Gold 750-Watts 100-240V 80 Plus Gold Full Modular SFX Power Supply
SKU: MPY-7501-SFHAGV-WU
Price: $438.16
SSR-850FX - Seasonic FOCUS Plus 850 Gold 850W 80+ Gold ATX12V & EPS12V Full Modular FDB Fan Compact Power Supply
SKU: SSR-850FX
Price: $439.64
MPE-A501-AFCAG-US - Cooler Master MWE Gold 1050-Watts 100-240V 80 Plus Gold Full Modular ATX Power Supply
SKU: MPE-A501-AFCAG-US
Price: $480.21
MPY-8501-SFHAGV-WU - Cooler Master V SFX Gold 850-Watts 100-240V 80 Plus Gold Full Modular SFX 12V Power Supply
SKU: MPY-8501-SFHAGV-WU
Price: $514.53
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.