Cable Cord Cylinders
Cable cords have a cylinder-like lump at their ends because it contains magnetic iron oxide. These lumps, which are known as chokes or ferrite cores, help prevent high-frequency electromagnetic interference. We are talking about interruptions like the weird noses that interrupt a call when your phone is too close to a speaker. Now you know exactly what the big cylinders on cable cords are for.
Cable Cord Cylinders
Apple Power Cord Wings
Many MacBook owners out there have no idea why the power cord comes with wings and why these wings can be pulled up. Apparently, it is easier to charge your MacBook if you pull the wings up and then wrap the cord around them because nothing will get in the way. Pretty handy if you are the kind of person who particularly hate making messes!
Apple Power Cord Wings