I have two devices in my house that use the D sub connector still. One is an old Pentium computer with a standard VGA monitor and which is attached to my video card using the D sub connector.
The other is an old PlayStation console which uses the same connector as well. As the article says, the newer systems come with HDMI, and I do have a newer computer with HDMI connections.
The D sub connector is a fairly reliable and universal old standard however, by which I can connect any number of traditional devices that don’t have ports for the newer types of cables.
Another reliable standby is the RCA connector, which I have on many of my old audio visual devices. It doesn’t deliver the same video quality that the newer HDMI cables do, but again, it’s an old standby, and it makes it possible to connect a lot of old devices together when nothing else will do.