It's a DE9, not a DB9 (but we know what you mean)
It's a DE9, Not a DB9. (But We Know What You Mean) You have been misusing the D-sub connector terminology, and we're guilty of it, too. You’ve seen them everywhere, especially on older computer equipment: the classic 9-pin serial connector. You probably know it as a DB9. It’s an iconic connector for makers, engineers, and anyone who's ever used an RS232 serial device. Here's a little secret, though: calling it a DB9 is technically wrong. The correct name is actually DE9. With the release of o