Replacement for 491CY: Drop-In Alternatives We Stock
Looking for a replacement for the 491CY (491CY - Dell 2000-Watts Non Redundant Power Supply for Tower Server PowerEdge T640)? Pro Disk Network ships Dell 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 491CY
| SKU | 491CY |
|---|---|
| Product | 491CY - Dell 2000-Watts Non Redundant Power Supply for Tower Server PowerEdge T640 |
| Stock status | In Stock |
| Detail page | View 491CY › |
Drop-in replacements for 491CY
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.
FSB001-240G2 - Dell 550-Watts 100-240V Non Redundant Power Supply for Dell PowerEdge R320 R520 R420
SKU: FSB001-240G2
Price: $395.34
V38RM - Dell 250-Watts 100-240V Non Redundant Power Supply for PowerEdge R210
SKU: V38RM
Price: $50.53
TH344 - Dell 420-Watts 100-120V/200-240V Non-Redundant ATX Power Supply for PowerEdge 800/830/840
SKU: TH344
Price: $73.68
PS-4351-1D1-LF - Dell 350-Watts 100-240V Non-Redundant Power Supply for PowerEdge R320
SKU: PS-4351-1D1-LF
Price: $92.63
GD278 - Dell 420-Watts 100-120V / 200-240V Non-Redundant Power Supply for PowerEdge 800 840
SKU: GD278
Price: $110.53
T9449 - Dell 420-Watts ATX Non-Redundant Power Supply for PowerEdge 800 830 840
SKU: T9449
Price: $131.58
0D221N - Dell 250-Watts 100-240V Non Redundant Power Supply for PowerEdge R210
SKU: 0D221N
Price: $143.39
D221N - Dell 250-Watts 100-240V Non Redundant Power Supply for PowerEdge R210
SKU: D221N
Price: $143.39
5P115 - Dell 450-Watts 100-127V / 200-240V Non-Redundant Power Supply for PowerEdge 1600SC
SKU: 5P115
Price: $147.37
HP-S4901A001 - Dell 490-Watts Non-Redundant Power Supply for PowerEdge T300
SKU: HP-S4901A001
Price: $160.00
ATX-300GU1500SC - Dell 350-Watts Non Redundant Power Supply for PowerEdge 1500SC
SKU: ATX-300GU1500SC
Price: $176.07
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.