DIGITUS USB to Serial Adapter - Pack of 2 - RS232 Converter - USB 2.0 Type A to DSUB 9M - FTDI Chipset - 80cm Extension Cable: Amazon.de: Computer & Accessories
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Digitus USB-C™ Serial Adapter, USB-C™ - RS485 (1 m) - buy at Galaxus
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DN-30200 DIGITUS - Bluetooth adapter | 10m; Interface: USB 1.1,USB 2.0; Class: 2 | TME - Electronic components (WFS)
DA-70156 User Manual Datasheet by Assmann WSW Components | Digi-Key Electronics
Digitus USB 2.0 Adapter DA-70148-4 | Conrad.com
DA-70158 | Digitus USB Serial Adapter Cable, 1.5m, RS232, 2 DB9 Male | Distrelec Germany