After a bit of head-scratching he thought about repurposing the four unused wires on one of the RJ45 Ethernet connectors.

Even though he was dealing with RS-232 serial, nothing prevents us from using this scheme for logic level signaling. For example, consider the following 1×10 header pinout, where the original 8 ...

I'm looking at getting a used Digi CM16 serial console off ebay to put in a remote location. It comes with RJ45 ports rather than DB9. The devices it's going to connect to also use RJ45 (APC PDUs ...

its a rs232 cable w/ a resistor in one end. thats all i know, i dont know which end it needs to be in, or what size of resistor. try checking google about that, they might have more info about ...

An RS232 port is available for $14, a single-port KVM for $48, and a 4G LTE expansion module for $110. There's also a microSD card reader with UHS-I support.

Existing serial peripherals can connect directly to industry standard DB9M or RJ45 connectors which are provided on-board each card or via a breakout cable. The PCIe-COM family was designed using type ...