DB9 Male to RJ45 Female Adapter
Passive adapter converts a DB9 male (RS-232) plug to an RJ45 female jack, allowing CAT5/6 cable to carry serial signals between DB9 devices. No power required; pin mapping follows standard RS-232-over-RJ45 conventions.
Start wiring
Ethernet · UART · SPI · Shield
Verify supply voltage and logic levels before powering up.
Wired comms
115 other optionsW5100/W5500 Ethernet shields, LAN8720 RMII PHY boards, MAX3243 RS-232 level shifters, isolated USB-to-RS485 converters, CAN FD bridges, and passive or active PoE injectors and splitters.
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