POINWER
255W Power Supply for OptiPlex 3020 7020 9020 T1700 SFF
Bottom line: The POINWER 255W Power Supply for OptiPlex 3020 7020 9020 T1700 SFF: Direct fit for OptiPlex 3020, 7020, 9020 and Precision T1700 SFF chassis; main trade-off: 255W rating leaves no headroom for a discrete GPU upgrade.
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Pros & Cons
Pros
- ✓ Direct fit for OptiPlex 3020, 7020, 9020 and Precision T1700 SFF chassis
- ✓ Cross-references 9 Dell part numbers including YH9D7, R7PPW and NT1XP
- ✓ Replaces 10 OEM PSU models such as H255ES-00, DPS-255LB and PS-3261-2DF
- ✓ 8-pin P1 plus 4-pin P2 ATX connectors match Dell SFF board layout, no adapters
- ✓ 100-240V input works on both US and international mains at 50-60Hz
Cons
- ✗ 255W rating leaves no headroom for a discrete GPU upgrade
- ✗ Proprietary Dell SFF form factor will not fit standard ATX cases
- ✗ Only two connectors - no PCIe or extra SATA power leads listed
- ✗ 265W max power caps what the OptiPlex can grow into
Manufacturer description
This POINWER 255W replacement power supply drops into Dell OptiPlex 3020, 7020, 9020, and Precision T1700 Small Form Factor desktops, restoring a dead or failing system without hunting down a used OEM unit. It matches a long list of Dell part numbers - YH9D7, R7PPW, NT1XP, 3XRJ0, V9MVK, FP16X, T4GWM, M9GW7, and FN3MN - and replaces original supplies including the H255ES-00, D255AS-00, L255AS-00, AC255ES-00, DPS-255LB, and PS-3261-2DF, so cross-referencing the label on your old PSU is usually enough to confirm fitment. Wiring is straightforward: an 8-pin ATX main connector (P1) and a 4-pin…
SpecPicks Verdict
SpecPicks scored POINWER 255W Power Supply for OptiPlex 3020 7020 9020 T1700 SFF using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. POINWER's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will this fit my Dell OptiPlex 9020 SFF?
Yes. It is listed as compatible with OptiPlex 3020, 7020, 9020 and Precision T1700 Small Form Factor systems. Check the label on your existing PSU for one of the listed model numbers such as H255ES-00, D255AS-00 or DPS-255LB to confirm.
How do I check that my old power supply matches?
Pull the side panel and read the sticker on the existing unit. This POINWER supply cross-references Dell part numbers YH9D7, R7PPW, NT1XP, 3XRJ0, V9MVK, FP16X, T4GWM, M9GW7 and FN3MN. Any of those means it is the right replacement.
What connectors does it come with?
Two: P1 is an 8-pin ATX main power connector and P2 is a 4-pin ATX connector for the CPU. That is the standard pairing Dell uses on these SFF boards, so no adapters are required.
Can I run a graphics card on this 255W supply?
It is rated 255W with 265W maximum power and no PCIe power connectors, so it suits low-profile cards that draw power from the PCIe slot only. Anything needing supplemental power is out of scope for this unit.
Key Features
- Compatible Model: Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor (SFF) Systems
- Compatible Model Number: H255ES-00 D255AS-00 D255E001L F255ES-00 L255AS-00 AC255AS-00 AC255ES-00 DPS-255LB HU255AS-00 PS-3261-2DF
- Compatible Part Number:YH9D7 R7PPW NT1XP 3XRJ0 V9MVK FP16X T4GWM M9GW7 FN3MN
- Connectors:P1 - 8-Pin ATX Power / P2 - 4-Pin ATX Power
- Input: 100-240V / 5.0A, 50Hz-60Hz 265W Max Power
Full Specifications
| Brand | POINWER |
|---|---|
| Input | 100-240V / 5.0A, 50Hz-60Hz 265W Max Power |
| Weight | 255lb |
| Wattage | 255 watts |
| Connectors | P1 - 8-Pin ATX Power / P2 - 4-Pin ATX Power |
| Model Name | AC255AS-00 |
| Unit Count | 1 Count |
| Form Factor | ATX |
| Model Number | AC255AS-00 AC255ES-00 DPS-255LB |
| Connector Type | 8-pin,atx |
| Cooling Method | Air |
| Output Wattage | 265 watts |
| Mfr Part Number | 4348299800 |
| Number of Items | 1 |
| Compatible Model | Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor (SFF) Systems |
| Compatible Devices | Desktop Computer |
| Connector Quantity | 2 |
| Power Supply Design | Internal |
| Number of Connectors | 2 |
| Maximum Input Voltage | 240 volts |
Ready to buy?
255W Power Supply for OptiPlex 3020 7020 9020 T1700 SFF is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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