Yost serial device wiring: RS232 on RJ45 - Lammert Bies Very interesting is the RS232 to RJ45 wiring standard proposed by Dave Yost in 1987, based on earlier wiring schemes used at Berkeley University. He tried to define a standard comparable to DECConnect, where both DTEs and DCEs could be connected with one cable type. RJ-45 to DB-9 Serial Port Adapter Pinout Information The console port is an RS-232 serial interface that uses an RJ-45 connector to connect to a management device such as a PC or a laptop. If your laptop or PC does not have a DB-9 male connector pin and you want to connect your laptop or PC to the device, use a combination of the RJ-45 to DB-9 female adapter along with a USB to DB-9 male adapter. Easy RJ45 Wiring (with RJ45 pinout diagram, steps and RJ45 pinout diagram for standard T568B, T568A and crossover cable are shown here! To remember the RJ45 wiring order we created tools that make it easy to memorize. We give more; the complete Ethernet pinout cable wiring reference with wiring step-by-step guide. RS232 Cables | Wiring & Pin Connections | Electronics Notes Whenever RS232 is used, RS232 cables will be needed to provide the required electrical connection. These cable can take a variety of forms in terms of the physical methods used for construction as well as the number of connections that are incorporated within the overall RS232 cable.