This USB Type-A to serial RS-232 adapter by Delock provides a compatible RS-232 DB9 interface for printers, measuring instruments, controllers, IoT devices etc. Galvanic isolation The USB 2.0 to serial RS-232 adapter completely decouples the USB and RS-232 connection and the USB power supply. This ensures data transmission at different ground potentials, separates any ground and hum loops that occur, and prevents interruptions caused by electromagnetic discharges or over voltages. Ferrite cores Two ferrite cores on the USB 2.0 cable filter high-frequency interference signals. Specification https://elecena.pl/product/23192561/64154-adapter-cable-usb-to-rs232-2-5-kv-galvan-isolation-2-m 2023-04-10 https://elecena.pl/product/23192561/64154-adapter-cable-usb-to-rs232-2-5-kv-galvan-isolation-2-m 2026-03-04