Your friend is mistaken. This serial port he is talking about is called "CGA" and closely resembles a serial port. However it still requires a graphics card and a monitor! You can convert a CGA ...

To take advantage of this I2C port on nearly every computer, [Josef] built a VGA to I2C breakout. This breakout is based on an older article about building a $0.25 I2C adapter. This adapter ...

So what if you need to attach a new MacBook to the VGA port of a second screen or projector? USB-C MacBook users have to get used to carrying round a bundle of adapters and dongles that allow ...