USB-C Quiz: The Reversible Plug and the EU Common Charger

This usb-c quiz plugs in a cable that works either way up. Play 10 interactive questions on the 2014 specification, a reversible 24-pin design, USB Power Delivery reaching 240 watts, Thunderbolt sharing the connector, the EU common charger rules taking effect in December 2024, the iPhone 15 switching from Lightning and why not all USB-C cables are equal.

Start USB-C Quiz

🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Year
When was the USB-C specification published?
Rev
What is a key feature of the USB-C plug?
Pins
How many pins does a full USB-C connector have?
Power
Up to how many watts can USB Power Delivery provide?
Bolt
Which fast interface shares the USB-C connector?
EU
When did EU common charger rules apply to phones?
iPhone
Which iPhone switched from Lightning to USB-C?
Cable
Are all USB-C cables the same?
Old
What did USB-C largely replace on phones?
Video
Can USB-C carry video?

Explanations: answer key for all 10 questions

Q1: When was the USB-C specification published?
Answer: 2014
It came from the USB Implementers Forum.
Q2: What is a key feature of the USB-C plug?
Answer: It is reversible
No more wrong-way attempts.
Q3: How many pins does a full USB-C connector have?
Answer: 24
They carry data and power.
Q4: Up to how many watts can USB Power Delivery provide?
Answer: 240 W
Enough for many laptops.
Q5: Which fast interface shares the USB-C connector?
Answer: Thunderbolt
Thunderbolt 3 adopted it.
Q6: When did EU common charger rules apply to phones?
Answer: December 2024
Laptops followed later.
Q7: Which iPhone switched from Lightning to USB-C?
Answer: iPhone 15
It launched in 2023.
Q8: Are all USB-C cables the same?
Answer: No, speed and power vary
Labels help.
Q9: What did USB-C largely replace on phones?
Answer: Micro-USB and Lightning
One port for many devices.
Q10: Can USB-C carry video?
Answer: Yes, with supported modes
It can drive monitors.

One Plug, Either Way Up

The USB-C specification was published in 2014 by the USB Implementers Forum. Its key feature is a reversible plug, ending wrong-way attempts. A full connector has 24 pins carrying data, power and other signals, and with supported modes it can carry video to monitors.

USB Power Delivery lets USB-C supply up to 240 watts, enough for many laptops. Thunderbolt 3 adopted the USB-C connector, so the same shape can carry very fast data. However, not all USB-C cables are equal: speed and power ratings vary, and labels help buyers choose.

USB-C largely replaced micro-USB and Apple's Lightning port on phones. EU common charger rules applied to phones and many other devices from December 2024, with laptops following later, and the iPhone 15 switched to USB-C in 2023. One port now charges many devices.

What This Quiz Teaches

Tech fans will enjoy these questions.

When USB-C arrived
What makes it reversible
How much power it carries
Which rules required it
Why cables differ

Did You Know?

USB4 also uses the USB-C shape.
Adapters connect older plugs.
Fast charging depends on both ends.
Some monitors charge laptops by USB-C.
Fewer chargers reduce e-waste.