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It’s a DE9, not a DB9 – OSnews

Summary by osnews.com
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. ↫ Christo-boots with the-pher at Sparkfun Electronics I honestly had no idea, and looking through the Wikiped…
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osnews.com broke the news in on Friday, July 25, 2025.
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