Use of Third Party Chargers

Use of third party laptop chargers on Stone branded laptop products is supported but only when an appropriate charger is used. Use of a charger of the wrong rating or connector may void your product warranty, and may cause product damage.

Guidelines on the use of Third Party Chargers

• DO use a charger of the same voltage as the original charger. Chargers that supply a lower or higher voltage should not be used. Most laptops have confirmation of the input voltage required on a label on the underside of the machine
• DO use a charger of the same or greater power output, either in watts (W) or amps (A).
• DO use a charger that provides a regulated output. Most laptop chargers do provide a regulated output, however many low cost generic power adapters (i.e. power adapters not built specifically for laptops) do not provide a regulated output.

We recommend the use of branded charges which clearly show the CE Marking, and show if the device is Class 1 or Class 2.

Example

For an original adapter that supplies 19V 3.42A (65W) please see the following examples of substitute adapter and whether or not they can be used:

Key:

• V = Volts, or voltage. Measurement of electrical pressure.
• A = Amps; measurement of current or electrical flow.
• W = Power in Watts - total power derived by multiplying the voltage (V) and amps (A).

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Diagnosis

Some notebook or tablet chargers have an LED directly on the charger itself. This LED is only useful to tell you that there is mains present (for example, that the fuse is OK). If the LED is not functioning, AC mains could still be present but the charger has failed. Conversely, even if the LED is illuminated, this does not guarantee that the charger is fully functional.

Other Dos and Donts

• Always replace the mains adapter if the cable becomes damaged or frayed
• Always keep the mains adapter and the notebook away from water or sources of moisture
• Never attempt to repair a mains adapter yourself. The only user replaceable components is the mains fuse on the mains lead, and the mains lead itself.

Applies to:

• Laptop and tablet products

Samsung ExpressCache

This is a technology to improve the performance and responsiveness of some models of Samsung notebook or ultrabook. It works by caching data that is written to or read from the systems main, traditional, mechanical hard drive.

The ExpressCache drive is typically only 24GB in size. The aim is to deliver significant performance improvements without incurring the cost of equipping the system with a full sized SSD hard drive, for example a 128GB SSD drive.

How Do you Configure ExpressCache?

The operating system should be installed to the main, larger hard drive as normal. Then use the Samsung Easy Settings manager to configure Express Cache settings.

Can I Upgrade the ExpressCache?

The Expresscache module on many Samsung systems cannot be upgraded. In this situation you cannot replace the chip or cache unit as it is directly soldered onto the motherboard.

What Are the Limitations on ExpressCache?

The ExpressCache can only benefit the system performance if the data has been read before. This means that the system does not reach SSD-only performance levels.

Additionally, as the ExpressCache caching is controlled through software, the information stored on it is always unencrypted. Customers that use bitlocker or other encryption methods should be aware that data segments stored on the Expresscache are not encrypted and could potentially be forensically retrieved. Organisations in this case should check that the product meets their security needs.

Applies to:

• Samsung notebook and ultrabook products that use Expresscache or are fitted with an iSSD