You can charge your devices with a cable, adapter, or charger. Whether that is a laptop, smartphone. or tablet. You can decide whether you choose a longer or shorter cable. You can use a cable, charger or adapter as an extra charger for work or as a replacement when the charger of your device is no longer working. This way, you have a spare or you no longer have to commute with your current charger from home to the office and back again.