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Upgrading an HP desktop power supply is a fit and capacity decision before it is a performance decision. A higher wattage rating does not tell you whether a unit will physically fit your case, plug into your motherboard, or provide the GPU connectors your graphics card needs. Start with your exact HP product number and the part number of the power supply already installed, then check each item in this guide before you order anything.
Start with your exact model, not the product family
HP sells desktops under families such as Pavilion, ENVY, and OMEN, and a single family can contain several chassis designs with different power supplies. A family name is not enough to select a replacement. You need the full model identifier and the existing power supply’s part number.
Find the product number and the power supply part number
- Product number: Look for the label on the chassis or in the original documentation. Record it exactly, including letters and hyphens, such as 880-119na.
- Power supply part number: Read the label printed on the power supply itself. Only read it if you can do so without opening the power supply enclosure, which you should never do (see the safety section below).
- Official parts data: Use HP’s parts store, which offers a search by product number, part number, or serial number. HP identifies PartSurfer as its advanced part search. Confirm the listed supported parts for your exact product number before buying.
Why wattage alone does not settle compatibility
A replacement must pass four separate checks. Passing one does not mean the others are satisfied.
- Physical form factor and dimensions: The unit must fit the bay and mounting points in your specific case. Compare measured dimensions with the original unit and the case, not just the form factor name.
- Motherboard power connector: Many HP desktops use a standard 24-pin ATX connector, but some use a proprietary motherboard power connector. A standard ATX unit will not necessarily mate with a proprietary plug.
- Auxiliary and GPU power leads: Confirm the number and type of cables for your graphics card and any other add-in components. Adapters are not a safe default unless the manufacturer documents them for your model.
- Total system power demand: Estimate the draw of the complete system with its actual CPU, GPU, and other components, then choose a rating with headroom (covered below).
A pre-purchase check, step by step
- Record the full HP product number from the chassis label or original documentation.
- Record the installed power supply’s part number and rated output, if readable without opening the enclosure.
- Search HP’s parts store by product number and check which power supplies HP lists for that model.
- Measure the installed power supply’s length, width, and height, and compare them with the candidate unit’s specifications. Check the mounting hole positions too.
- Inspect the motherboard’s power connector and count the auxiliary cables you need, including GPU leads.
- Calculate the total system demand, add headroom, and compare the result with the candidate’s rated output.
- If HP documentation does not list the candidate, contact HP support or a qualified repair provider to confirm the exact part before you buy.
Two HP examples that show why no single replacement works
HP Support Community answers illustrate how differently HP desktops are built. They are model-specific examples, not general rules, and you should verify your own configuration against the same checks.
#1 Best Overall
- 【Replacement for HP monitor power cord】: vh240a 20xi C4D33AA#ABA, 22cwa T4Q59AA, 22CW, 22XW, 23XW, 23cw, 23tm, TOUCH E1L11AA#ABA, 23xi C3Z94AA#ABA, 24XW, 24ea, 24ec, 24mh,25CW, 25bw C3Z96AA, 25xi C3Z97AA#ABA,25xw, 27xi C4D27AA#ABA, 27er, 27xw ,27CW HP Pavilion 27 27xw 27xi 25 24ea 25xw 25bw 25xi 22xi 22cwa 22bw 22fi 23 23bw 23cw 23xi 23fi 23er 20xi PN: ADPC1945, ADPC1965 , J7Y67AA#ABA , J7Y75AA#ABA , J7Y65AA#ABA , ADPC-1945, ADPC-1965, 700392-001, 735297-001, 700392001
- 【Compatible with hp monitor power supply】: 735297001 735297-001 700393-001 ADPC1945 E1L11AA#ABA T3M76AA#ABA C3Z96AA C3Z97AA#ABA C4D27AA#ABA HP Pavilion 22bw 22cwa 22fi 22er 22es 23bw 23vx 23cw 23tm 23er 23es 23fi 23xw 24ea 24es 24m 25bw 25er 25vx 25xi 25xw 27fw 27xi 27er 27xw 32f IPS Monitor,23.8 1D0J9AA#ABA;27 22H94AA#ABA.
- 【Input voltage ranget】: 100-240V Output Max:19V 3.42A 65W Max ( Compatiblle with 19V 1.58A/ 2.1A/ 2.37A/ 3A ); extra long power cord and the power cord bending resistance is not easy to damage. PLEASE NOTE!!!!! ❌❌❌Not fit for 2011X 2211X 2311X 2511X 2711X M22F M24F M24FW M27F M27FD
- 【Safety & Reliability】: All products have been tested and ensure available. We guarantee this hp monitor power cord will charge your devices as efficiently as the original Charger for HP monitor. Furthermore, all chargers are ETL CE FCC RoHS certified with over-voltage, over-load, over-current, short circuit protection.
- 【What you get】: 1*8.2FT Power Cord 19V Adapter for HP Monitor with a connector cable.PLEASE NOTE!!!!!If you find that there are no metal contact pins inside the hp monitor power port, please try using the blue adapter cable ; We offer and 24 hours customer service. Please contact us if you have any problem of our products, we will do our best to solve it.
OMEN 880-119na: a standard ATX path
An accepted HP community answer for the OMEN 880-119na reports a 500W ATX power supply and describes an ATX replacement route. Even on this path, the same kind of answer still requires you to confirm physical dimensions and cable layout before buying. A common reader question for this model is “What can I replace the power supply with that will fit with no problem in my desktop ?” That wording is typical of the question, but it does not tell you how common the problem is. The answer is a model-specific fit check, not a generic recommendation.
ENVY TE01-1144: a proprietary 4-pin motherboard connector
A separate accepted answer for the ENVY TE01-1144 says the motherboard uses a proprietary 4-pin power connector rather than a standard 24-pin ATX connector. That means a generic ATX unit cannot simply be plugged in. The answer identifies possible HP part numbers for that case and recommends confirming fit with HP support before ordering. If your HP desktop has a proprietary connector, a genuine or HP-confirmed part is the safer route.
GPU upgrades: the power figures to use, and their limits
When people upgrade a graphics card, they usually want to know whether the existing supply can carry it. HP’s OMEN upgrade article gives the following figures for three cards. Treat them as HP’s numbers for its own system context, not as universal requirements.
Rank #2
- POWER SPECS - Output Max: 19.5V 3.33A 65W (also compatible with 19.5V 2.30A 45W) Input Volt Range: 110-240V /(Blue Tip Size: 4.5 x 3.0mm) Compatible with HP Laptop Power Supply AC Adapter Charger Cord
- Compatible with HP Smart Blue Tip Models 65W/45W: Elitebook 830 / 840 G3 G4 G8 / 850 G3 G4 / ProBook 430 G8 / 440 G8 / 450 G3 G8 / 640 G2 G3 G4 / 650 G2 G3 / Pavilion x360 / Stream 11 Pro G3 / Stream 11 Pro G4 EE / Chromebook 11 EE G2 G3 G4 / Spectre x360 x2 / Notebook 15 / Zbook / Part Numbers: SK90195333 710412-001 741727-001 213349-109 854054-002 L24008-001 L25296-001 L25296-002 SK90A195231 TPN-LA15
- SAFETY- The Leading American Consumer Product Testing Laboratory, Lists This HIBBO Product as Meeting Their Standards for Electrical Safety and Design in The United States and Canada. Don't Buy Potentially Inferior or Dangerous Chargers That Can Harm Your Laptop or Worse
- PORTABLE DESIGN - One Adapter for Many Models Compatible with HP Laptop. And the Weight is So Light Which is An Incredibly Small Footprint the Laptop AC Travel Adapter Slips into Bags, Purses and Even Pockets with Ease While You Go Anywhere
- OUR GUARANTEE - As a Professional Notebook Power Supplier, Our Products are in Compliance with Top Industry Standards, Include Numerous Safety Mechanisms, Including Protection Against Short Circuiting, Overvoltage, Overcurrent, and Internal Overheating. That's Why We Offer an Industry-Leading Return and Exchange Policy: Within 30 Days of Purchase. Additionally, LIFETIME from The Date of Purchase, We Will Exchange Your Product Should it Become Defective
| Graphics card | GPU power | Total system requirement | Source and date |
|---|---|---|---|
| NVIDIA GeForce RTX 4090 | 450W | 850W | HP OMEN upgrade article, framed around 2025, accessed 2026 |
| NVIDIA GeForce RTX 4080 | 320W | 750W | HP OMEN upgrade article, framed around 2025, accessed 2026 |
| NVIDIA GeForce RTX 4070 Ti | 285W | 700W | HP OMEN upgrade article, framed around 2025, accessed 2026 |
The same article lists a standard OMEN 25L power supply at 500W. These values do not replace the checks above. A 850W total requirement for an RTX 4090 setup, for example, still says nothing about whether your case has room for a unit with the right GPU cables.
Sizing headroom with HP’s 20–30% guidance
HP’s general OMEN hybrid-upgrade article advises adding 20–30% headroom above your calculated system needs, as of access in 2026. This is editorial guidance from HP, not a measured result or an industry standard. As a worked example, if your calculated demand is 600W, 20% headroom gives 720W and 30% gives 780W, so a unit rated in that range would meet the guidance.
What a PSU upgrade will and will not change
A power supply upgrade solves a capacity or compatibility problem. It is not automatically a performance upgrade. If the existing supply cannot carry a new graphics card, replacing it can be the step that makes the card usable. If the existing supply is adequate, a bigger unit will not make the system faster.
Rank #3
- RATED POWER: 65W, AC Input: 100 - 240V 50 - 60Hz, Output: DC 19.5V 3.33A 65W Blue Tip, (also compatiable with 19.5V 2.3A 45W). Connecter size: 4.5 mm outer diameter / 3.0 mm inner diameter.
- Compatible with HP Smart Blue Tip Models 65W/45W: Elitebook 830 G5 / 840 G3 G4 G5 / 850 G3 G4 G5 / ProBook 450 G3 G5 / 640 G2 G3 G4 G5 / 645 G3 G4 / 650 G2 G3 / Pavilion x360 / 11-k120nr/ 13-s128nr/ 13-s192nr/ m3-u001dx / m3-u003dx / Stream 11 Pro G3 / Stream 11 Pro G4 EE / Chromebook 11 EE G2 G3 G4 G5 Part Numbers: 693716-001 693711-001 714657-001 710412-001 710340-850 714657-001 741727-001
- SAFETY: The Leading American Consumer Product Testing Laboratory, Lists This Ostrich Product as Meeting Their Standards for Electrical Safety and Design in The United States and Canada. Don't Buy Potentially Inferior or Dangerous Chargers That Can Harm Your Laptop or Worse.
- PORTABLE DESIGN - One Adapter for Many Models compatible with HP Laptop. And the Weight is So Light Which is An Incredibly Small Footprint the Laptop AC Travel Adapter Slips into Bags, Purses and Even Pockets with Ease While You Go Anywhere.
- OUR GUARANTEE - As a Professional Notebook Power Supplier, Our Products are in Compliance with Top Industry Standards, Include Numerous Safety Mechanisms, Including Protection Against Short Circuiting, Overvoltage, Overcurrent, and Internal Overheating. That¡¯s Why We Offer an Industry-Leading Return and Exchange Policy: Within 30 Days of Purchase. Additionally, LIFETIME from The Date of Purchase, We Will Exchange Your Product Should it Become Defective.
No independent published statistic or controlled efficiency measurement was found in the sources reviewed, so this guide does not quantify electricity savings or claim a performance gain from changing the power supply alone. Any efficiency or performance expectation should be tested against your own hardware and usage.
Genuine HP part or third-party ATX unit?
Use this comparison to decide between the two routes. Where a value is not established by HP’s own material, the table says so.
| Factor | Genuine HP replacement | Third-party ATX unit |
|---|---|---|
| Confirmation for your product number | Listed in HP’s parts lookup for your model, if present | Not confirmed unless HP documentation or HP support confirms it for your exact model |
| Fit and dimensions | Designed for the HP chassis; still measure your case | Must be measured against your case; not stated by HP for most models |
| Motherboard connector | Matches the HP design | Standard 24-pin ATX only; not compatible with proprietary connectors such as the 4-pin plug described for the ENVY TE01-1144 |
| GPU power leads | Matches the HP design | Verify cable type and count for your graphics card |
| Efficiency certification, warranty, noise, modular cabling | Not stated in the sources reviewed | Not stated in the sources reviewed; verify for each candidate model |
HP’s OMEN hybrid article names example tiers of 650W, 850W, and 1000W+ and mentions third-party units. Those are broad system categories and examples from an editorial article, not an HP-approved list of compatible models.
Rank #4
- Works with HP Smart Blue Tip (4.5x3.0mm) models 65W and 45W. Perfectly fits for HP Pavilion x360 11 13 15, Envy 13 15, EliteBook 830 840 G3 G4 G5 G8, ProBook 430 440 450 G3 G8, Chromebook 11 14, Spectre x360, Stream 11 14, and ZBook series. (Note: Not for USB-C ports)
- Output Max: 19.5V 3.33A 65W (Backward compatible with 19.5V 2.31A 45W). Input Voltage Range: 100-240V 50-60Hz. Designed for stable energy delivery to ensure your laptop stays powered during office work, school, or travel
- Built with high-quality materials and tested to meet industry electrical safety standards. Features a comprehensive multi-protection system against overvoltage, overcurrent, short-circuiting, and internal overheating to protect your device from potential damage
- The lightweight and slim design allows this AC adapter to slip easily into backpacks, purses, or even pockets, providing extra flexibility and convenience for daily commuting and on-the-go charging
- Package includes 1x 65W Laptop Charger and 1x AC Power Cable. We offer professional lifetime product support and a dedicated 12-month replacement policy for defective units to ensure a worry-free purchase experience
Safety and service limits
HP’s general servicing guidance is clear on the basic rule. Disconnect the power cord before you open the computer. HP’s guide states:
“Never open the cover while the power cord is attached. You might damage your computer or be injured by the spinning fan blades.”
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
HP Support’s fan-noise guidance also warns against working inside the power supply itself:
Best Value
- Hp Laptop Charger: Our 45W laptop charger features a specific 4.5mm x 3.0mm connector tip (blue tip with a center pin). Output Max: 19.5V 2.31A 45W. (Note: Please check your original charger's specifications and tip size before purchasing to ensure a perfect fit)
- Widely Compatible: Perfectly compatible with HP Smart Blue Tip (4.5x3.0mm) models 65W and 45W. Perfectly fits for HP Pavilion x360 11 13 15, Envy 13 15, EliteBook 830 840 G3 G4 G5 G8, ProBook 430 440 450 G3 G8, Chromebook 11 14, Spectre x360, Stream 11 14, and ZBook series. (Note: Not for USB-C ports)
- High Quality: Charger Replacement for HP with Rigorously tested for safe, reliable operation. Includes safety mechanisms for protection against short circuiting, overvoltage, overcurrent, and internal overheating. hp envy laptop charger hp pavilion laptop charger hp elitebook charger for laptop
- HP 45W Laptop Charger: 19.5V 2.31A blue tip 4.5x3.0mm power adapter compatible with hp pavilion x360 envy elitebook probook chromebook spectre stream zbook 45w replacement ac power supply cord (not usb‑c)
- Complete Accessories Package: Comes with 1× power adapter and 1× power cord for plug-and-play use. No extra accessories are required, allowing immediate power supply and charging right out of the box with great cost performance
“To avoid the risk of fire and electrical shock, do not try to replace the fan inside the power supply by yourself.”
If the power supply fan is noisy or failing, contact HP support rather than dismantling the unit. Stop and contact HP support or a qualified technician if you are unsure about connector type, physical fit, or handling a power supply safely.
The safest path for proprietary-connector models is a genuine HP part or a unit HP support has confirmed for your product number. For standard ATX models, a third-party unit can be a reasonable option, but only after every check in this guide has passed.
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