This category contains mains power adapters and power supplies for laptops, network devices and other electronic equipment. It suits anyone replacing a lost or damaged charger, or powering a device that needs a specific supply. Brands in our range include Siemens, Maxtrack, HP, Dell and Lenovo.
How to choose a power adapter or power supply
Match the device first. The adapter must be made for your exact laptop or device. Check the model number on the underside of the laptop or on the old adapter's label, and compare it with the product listing before ordering.
Check voltage and output current. The output voltage (V) printed on the label must match what your device expects. A different voltage can cause the device to fail to charge or, in the worst case, damage it. The current (A) of the new unit should be equal to or higher than the original.
Look at the wattage. Wattage is voltage multiplied by current. An adapter with the same or a higher wattage than the original will work, but a lower wattage may leave a laptop charging slowly or running on battery under load. Gaming laptops and mobile workstations usually need larger adapters than thin office models.
Confirm the connector type. Laptop adapters use barrel plugs of different sizes, and some newer models charge over USB-C. Barrel plugs that look identical can still differ in pin layout, so the model match matters more than the appearance.
Decide between original and general-purpose supplies. Original adapters from the laptop maker are the safest match for that machine. Power supplies from industrial and networking brands are intended for particular equipment such as control systems, access points or conferencing devices, so check the input and output specifications against the equipment manual.
Brands we carry
- Siemens: a major industrial automation manufacturer, known for power supplies used in control cabinets and automation systems.
- HP, Dell and Lenovo: laptop makers whose original adapters are designed for their own notebook ranges, which makes them the straightforward choice for like-for-like replacement.
- Ubiquiti: a networking brand whose power accessories are used with its own access points and switches.
- HP - Poly: known for headsets and conferencing equipment, with power supplies made for those devices.
Also in our range: Maxtrack, Micro Connect and 2-Power.
Frequently asked questions
How do I find the right power adapter for my laptop?
Start with the laptop's exact model number, which is usually printed on the underside. Then compare the voltage, wattage and connector on your old adapter's label with the new one. If all three match, the adapter will work with your laptop.
Can I use a higher wattage adapter than the original?
Yes, as long as the voltage and connector are the same. The laptop only draws the power it needs, so a higher wattage adapter will not overload it. An adapter with a lower wattage than the original is the one to avoid.
Is an original adapter better than a third-party one?
An original adapter is made to the laptop manufacturer's specification, so it is the most dependable match for that model. A third-party unit can work well if its voltage, current and connector match exactly. Always check these figures rather than relying on the brand name alone.
What is the difference between a laptop adapter and an industrial power supply?
A laptop adapter is a plug-in unit that charges a portable computer and fits its specific connector. An industrial power supply, such as those made by Siemens, usually converts mains power to a stable voltage for automation equipment and is often mounted on a rail in a cabinet. They are built for different jobs and are not interchangeable.