还在发愁笔记本上的USB插头不足吗？现在有VGA转USB接口卖了。
当然，只是供电而已
| Pin | Name | Dir | Description |
|---|---|---|---|
| 1 | RED |  |
Red Video (75 ohm, 0.7 V p-p) |
| 2 | GREEN | |
Green Video (75 ohm, 0.7 V p-p) |
| 3 | BLUE | |
Blue Video (75 ohm, 0.7 V p-p) |
| 4 | RES | RESERVED | |
| 5 | GND |  |
Ground |
| 6 | RGND | |
Red Ground |
| 7 | GGND | |
Green Ground |
| 8 | BGND | |
Blue Ground |
| 9 | KEY | - | Key (No pin) / Optional +5V output from graphics card |
| 10 | SGND | |
Sync Ground |
| 11 | ID0 |  |
Monitor ID Bit 0 (optional) |
| 12 | SDA | |
I2C bidirectional data line |
| 13 | HSYNC or CSYNC | |
Horizontal Sync (or Composite Sync) |
| 14 | VSYNC | |
Vertical Sync which works also as data clock |
| 15 | SCL | |
I2C data clock in DDC2, Monitor ID3 in DDC1 |
主要利用Pin9的5V电压
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