Joke Collection Website - Mood Talk - Who can tell me what these two interfaces are?

Who can tell me what these two interfaces are?

The green one is a 9-pin com port, which is a serial port, not a graphics card interface.

You can connect a card reader, a serial cat and the like, but it is used less.

The blue one is the interface of lpt old printer.

But it is rarely used, and now it is all usb printers.