Plastic cylinder on the cable
Electronic devices are known to generate electromagnetic waves. These can not only be permanently harmful to health, but can also interfere with other electronic devices. The small plastic cylinder on the cable of the device contains a ferrite core. This ferrite core acts as a so-called interference suppression filter and cancels out electromagnetic waves before they can be emitted via the cable. You will notice that all electrical appliances today have this ferrite core. Ferrite is a non-electrically conductive material that absorbs electromagnetic waves as they pass through it
Plastic cylinder on the cable
Apple charging cable with hook
Apple is known for its innovative ideas and designs. This also applies to the charging cable for Macbooks. The cables have small, fold-out hooks that make it easier to wind them up and keep them tidy. This prevents tangled cables and knots in the cable and also protects the cable. The device prevents the cable from being wrapped too tightly and possibly tearing. Another good idea from Apple.
Apple charging cable with hook