What is the purpose of the plastic ring on the MacBook Air charger?

I use MacBook Air.

If you look at the charger, there is a plastic ring, so you can put it in and out.

I don't know what this is for, but what is it used for?

1254 2017-07-19 Gentleman

popular What are the side effects of oats?

popular How do I recycle and recycle foil like cooking foil?

popular Why does it say that your license has expired on your phone?

popular Is hair spray not allowed on the plane at all?

popular Do oats also have side effects?

Same Tag Can I charge MacBook Pro with iPad Pro 3rd generation charger?

Same Tag How fast is the wireless charger charging?

Same Tag If I use a high-speed wireless charger, what happens when I'm 100% charged?

Same Tag What does mojave read?

Same Tag Please recommend a lip product that's similar to Mac Ruby Woo's

Same Time How many people can drive a car with a type 1 normal license?

Same Time What is the purpose of the plastic ring on the MacBook Air charger?

Same Time Can I use VR or S-note with Galaxy Note FE?