USB-C: 범용 커넥터 완벽 가이드
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USB-C에 대해 알아야 할 모든 것: 비디오 출력, 충전, 데이터 속도, 그리고 실제로 작동하는 케이블을 구분하는 방법입니다.
## Why USB-C Is Everywhere
USB-C is the first connector that can handle **everything**: data, video, audio, and power through a single, small, reversible plug. But not all USB-C cables and ports are equal.
## What USB-C Can Do
| Feature | Requires |
|---|---|
| Charging (up to 240W) | USB PD 3.1 |
| 10 Gbps data | USB 3.2 Gen 2 |
| 40-80 Gbps data | USB4 / Thunderbolt |
| Video output | DP Alt Mode or Thunderbolt |
| Audio output | USB Audio Class |
## The Cable Problem
A USB-C cable might only support USB 2.0 (480 Mbps) even though it looks identical to a 40 Gbps Thunderbolt 4 cable. **Always check the cable's rated speed**, not just the connector.
## How to Identify Your USB-C Port
Look for these icons near the port:
- ⚡ Lightning bolt = Thunderbolt
- SS or SS10 = SuperSpeed USB 3.x
- 🔋 Battery icon = Power Delivery charging
- DP = DisplayPort Alt Mode
## Buying Tips
1. For charging: any USB-C cable with PD rating ≥ your charger's wattage
2. For data: look for 'USB 3.2 Gen 2' or 'USB4' on packaging
3. For displays: need 'DP Alt Mode', 'Thunderbolt', or 'USB4' cable
4. For docking: Thunderbolt 4 cable is the safest all-in-one choice