Dell Precision 15 (3540) original AC-adapter 90.0 Watt rounded
Common data
- Condition
- New
- Manufacturer
- Original directly from Dell
- Intended use
- Laptops
- Color
- black
- Design
- rounded
- Delivery includes
- incl. power cable (3-pole cable C5)
Technical Data
- Tension (volt)
- 19.5 Volt
- Amperage (ampere)
- 4.62 Ampere
- Output (watt)
- 90.0 Watt
- Input (volt)
- 100-240V / 50-60Hz
- Energy efficiency
- VI
- Function LED
- function-LED in connector
Laptop Plug
- Connector type / shape
- round / 180° straight
- Connector length (mm)
- 10.5 mm
- Connector diameter outer / inner
- 7.4 mm / 5.0 mm
- Connector with pin
- Yes
- Length of the connector cable (m) (ca.)
- 1.80 m
Weight & Meassurements
- Length / Width / Hight
- 100 mm / 65 mm / 22 mm
More Information
- Overload-, short-circuit- and overheat-protected
- yes
- Seal of approval
-
CCC
CE
EAC
N
NOM NYCE
PSE
SEC
Singapore Safety Mark
Technical Inspection Association (TÜV)
UKCA
UL Listed
Ukraine Safety
You can always rely on high computing power with the 90-watt power supply from Dell, specially designed to power your Dell™ laptop. The power supply allows you to connect your system to the power supply for operation or to charge the battery. Lightweight and small, this 90-watt power supply is the perfect portable power source wherever you are - at home, in the office or on the road. It's best to equip yourself with two power adapters, so you have one for your desk and one in your bag for easy access on the go. This product has been tested and validated to work with your Dell systems and Dell technical support is available for this product.
Category
- Category
- AC-Adaptor
- Usage
- Laptop
Videos & Contributions
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Important and useful informations about laptop AC adapters
Frequently asked questions about AC adapters
- My notebook is not charging with the USB-C power adapter. What is the reason for this?
If your notebook does not charge via USB-C, this is usually not due to a defect, but to compatibility or performance problems. USB-C uses the power delivery standard (USB-PD), which must be supported by both devices.
The most common causes:
- Too little power: For example, your power supply only delivers 45 W, but your laptop requires 65 W or more.
- Unsupported protocol: The power supply or laptop do not speak the same USB PD standard.
- Poor or defective USB-C cable: Not every cable transmits the required power - especially with fast charging functions.
- Dirty or damaged USB-C port: Dust or scratches in the port prevent a stable connection.
- Firmware or BIOS settings: Some manufacturers disable USB-C charging in the BIOS or limit it in case of overheating.
Troubleshooting tips:
- Power supply check: Always use a USB-C power supply with sufficient power and USB-PD certification.
- Cable test: If problems occur, test another certified cable.
- System reset: If the notebook is still not charging with the original USB-C power adapter, a BIOS update or a brief power reset (disconnect the battery and power adapter, press and hold the power button for 30 seconds) will often help.
Caution: You can tell that charging is working if the charging indicator reacts immediately and the power supply unit clicks or hums briefly. If this does not happen, there is almost always a compatibility problem.
- What makes a GaN power supply unit special?
Inside a power supply unit are components that convert the mains voltage (e.g. 230 V) into the right voltage for your notebook. GaN power supply units use gallium nitride semiconductors for this purpose.
This has several advantages:
- Smaller & lighter
- For the same output power (e.g. 65 W, 100 W or 240 W), a GaN power supply unit can be built much more compactly.
- Ideal for on the go, in the home office or if you have little space in your bag.
- Higher efficiency, less waste heat
- GaN components work more efficiently, so less energy is lost in heat.
- Although the power supply unit does get warm under load, it generally runs more smoothly and can be more durable.
- High performance in a small space
- Very powerful power supply units (e.g. 100 W, 240 W) are also possible with GaN in a relatively small form factor .
- This is exciting if you want to operate a powerful notebook, a docking station or several devices with one power supply unit.
Important: GaN power supplies are currently still somewhat more expensive than conventional notebook power supplies. The combination of compact form factor and proven quality makes them an attractive choice for many customers.
- Smaller & lighter
- Why is my power supply humming?
Modern laptop power supplies are so-called switching power supplies - they work with very high switching frequencies and should function practically silently. If you still hear a humming, hissing or whirring noise, this is not normal and often indicates a technical defect or inferior components.
Typical causes are
- loose or poorly potted coils and capacitors,
- incorrect switching frequency or inadequate filtering,
- component wear or voltage problems in the mains supply.
Such noises hardly ever occur with original power supply units as they undergo strict quality and safety tests. Replica power supply units, on the other hand, often use simple components without sufficient interference suppression - here, humming or hissing is a clear warning sign.
Important: If a power supply unit hums or hisses audibly, stop using it!
Disconnect it from the power supply immediately and dispose of replica power supply units immediately, as they can pose a safety risk. Only use original power supply units to ensure a stable, quiet and safe power supply for your notebook.
- Will my battery charge faster with a power supply unit that has more power?
No, just because the power supply has more watts, your battery will not automatically charge faster. The decisive factor is the power required by your notebook and the permissible power of the charging electronics - not the maximum power of the power supply unit.
How does charging work technically?
- Every notebook has built-in charging electronics that regulate exactly
- how much current flows into the battery and
- how quickly or gently the battery is charged.
- The power supply unit only provides the maximum possible power - it does not "force" this power into the notebook.
- Your notebook only "takes" as much power as it is designed for.
This means:
If your notebook is only designed for 65 W, for example, a 90 W or 120 W power supply alone will not provide a turbo charging advantage. The device limits the charging current itself. - Every notebook has built-in charging electronics that regulate exactly
All questions about AC adapters
