Safe, Reliable Charging

Just as much power as you need.

A charger with brains.

Cambrionix USB hubs auto-detect attached devices and automatically adjust the current output to the highest level permitted by the device manufacturer and USB specifications
(USB Battery Charging V1.2).

Future proof.
Our intelligent charging algorithm can be updated to support new devices and charging protocols, ensuring your Cambrionix hub keeps up with market changes.


How much charge does your device need?

29-100W : Laptop0%
100 %
18-30W : Tablet0%
50 %
18-27W : Smartphone0%
25 %
5W : Smartwatch0%
12 %

Charge and connect at the same time with Cambrionix managed USB hubs that deliver high-speed charging and syncing.

Read more about this feature here 

Charging & syncing

Charging profiles

To ensure attached devices charge at their optimum rate, our USB hubs come with six charging profiles built in.

These profiles are: 

1. 2.1A (Apple) 
2. BC1.2 Standard (This covers the  majority of Android phones and other devices)
3. Samsung 
4. 2.1A (Apple and others with longer timeout) 
5. 1.0A (Typically used by Apple) 
6. 2.4A (Typically used by Apple)

We do not recommend that users change the profile settings in NVRAM (or by other means) unless they are required to offer a 'fixed profile' to their device in order to prevent the device misbehaving.

Contact us for more information about changing the profile settings on our USB hubs.

Charging at the incorrect level

Charging devices not at their optimum charging level has a number of issues.

Firstly, the device won’t charge correctly as designed by the manufacturer. This isn’t ideal for the long-term health of the battery. But more importantly charging will not happen as fast as it could.

iPad Example
Requires a charger which is capable of supplying 2.1 Amps at a voltage of no less than 4.97V at the charger connector on the cart/case (when the iPad is connected and charging). Failure to supply this amount of current at the right voltage will extend the amount of time required to charge the iPad battery. This detrimental effect can be easily demonstrated by charging an iPad, from empty to full, with an iPhone charger. An iPhone charger can only supply the iPad with 1 Amp (referred to as ’1A’).

Watts & Amps

5W = 1A                     7.5W = 1.5A

10W = 2.1A                12W = 2.4A

Why do Amps matter?

Current is supplied by a power supply or charger. A product (e.g a phone or tablet) consumes current. It will try and take as much current as it needs.


If a product requires 2.1 Amps then the power supply should be able to supply 2.1 Amps or more. If the power supply can supply more than 2.1 Amps this doesn’t matter as the product will only take 2.1 Amps. If the power supply can only supply 1 Amp then either the product will fail to work/charge or charge slowly as it can’t get enough current (or power) to charge the battery. So here charging will take twice as long.

This means it is important to match voltage between the charger and device. It doesn’t matter if the power supply / charger can provide more current then the device requires. Providing less current will prevent charging or slow it down the same as a poorly designed charger can also prevent charging or slow it down.

Device charging levels

Devices charge at different rates and require different power.

Mobile phone charging methods compare as follows:








Charging from a computer (USB 2.0). If you’re charging from a computer (USB 2.0 port), the maximum current it can provide is 0.5A. This is much slower than charging from the mains.




Charging from a computer (USB 3.0). If you’re charging from a computer (USB 3.0 port), the maximum current it can provide is 0.9A.




Most smartphones come with a 1A charger.




USB Hubs. Supports BC1.2.  




iOS devices and many tablets, including the iPad, require a 2A charger. Some smartphones can also use a 2A charger (e.g. Samsung Galaxy Note II).




Most iOS devices.

Power refers to the rate at which energy is added to the battery. It’s calculated by the formula: Power (Watts) = Current (Amps) * Voltage (Volts).

BC1.2 Charging Specification

SB-IF Battery Charging Specification revision 1.2 (BC1.2) and the full specification can be found at

This specification was created to try to unify battery-charging attributes for USB 2.0 in the future. The idea was to minimize the number of cell-phone chargers ending up in landfills, by converging on one USB-charging specification. The European Union has been an early adopter to the notion of less waste. Specifically, they have committed using the same microUSB connectors on data-enabled cell phones, but they have yet to fully adopt the BC1.2 specification.

In the BC 1.2 specification, there is a mode referred to as Charging Downstream Port (CDP) that allows for data and higher charging currents.
If a voltage between 0.4V and 0.8V is sensed on D+ of a host or hub device, then D- should respond with 0.5V to 0.7V.

Once CDP has been established, peripheral devices are allowed to draw up to 1.5A and simultaneously communicate data. 

Safe, reliable charging.

Cambrionix industrial USB hubs provides ESD, over-voltage, over-current and over-temperature protection.

UL Listed #E346549

Complies with EN60950 safety requirements for IT equipment

CE Tested and marked

Chinese CCC & Indian BIS Approved. Pending Japanese PSE certification.

CB Certificate

FCC Part 15 tested and marked

RoHS Compliant

Need help?

Let our team help you find the right product for your solution.

Call  +44 (0) 1223 755520

or send us an enquiry