Replacement for 3859D: Drop-In Alternatives We Stock
Looking for a replacement for the 3859D (3859D - Dell 410-Watts 100-240V ATX Power Supply for Precision 420)? 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 3859D
| SKU | 3859D |
|---|---|
| Product | 3859D - Dell 410-Watts 100-240V ATX Power Supply for Precision 420 |
| Current price | $131.58 |
| Stock status | In Stock |
| Detail page | View 3859D › |
Drop-in replacements for 3859D
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.
NPS-375AB - Dell 375-Watts 100-120V 200-240V ATX Power Supply for Dimension 9100 9150 9200 Precision 380 390 XPS 400 410 420
SKU: NPS-375AB
Price: $109.05
0G192T - Dell 350-Watts 100-127V / 200-240V ATX Power Supply for Vostro 410 XPS 8100
SKU: 0G192T
Price: $184.09
G192T - Dell 350-Watts 100-127V / 200-240V ATX Power Supply for Vostro 410 XPS 8100
SKU: G192T
Price: $184.09
NPS-375ABA - Dell 375-Watts 100-120V 200-240V ATX Power Supply for Dimension 9100 9150 9200 Precision 380 390 XPS 400 410 420
SKU: NPS-375ABA
Price: $205.26
PH344 - Dell 375-Watts 100-120V/200-240V ATX PFC Power Supply for Dimension 9100/9150/9200, Precision 380/390, XPS 400/410/420
SKU: PH344
Price: $211.58
0PH344 - Dell 375-Watts 100-120V/200-240V ATX PFC Power Supply for Dimension 9100/9150/9200, Precision 380/390, XPS 400/410/420
SKU: 0PH344
Price: $211.58
NPS-375ABB - Dell 375-Watts 100-120V 200-240V ATX Power Supply for Dimension 9100 9150 9200 Precision 380 390 XPS 400 410 420
SKU: NPS-375ABB
Price: $226.08
M631C - Dell 350-Watts 100-240V ATX Power Supply for Vostro 200 400 410 / Inspiron 530 531
SKU: M631C
Price: $226.08
N375P-00 - Dell 375-Watts 100-120V/200-240V ATX Power Supply for Dimension 9100/9150/9200, Precision 380/390, XPS 400/410/420
SKU: N375P-00
Price: $247.58
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.