Alternatively called the EIA/TIA-449, the RS-449 is short for Recommended Standard-449. It is a data standard that specifies the functional and mechanical characteristics of the interconnection between DTE and complying EIA electronic standards RS-422 and RS-423. The RS-449 standard is commonly found in data network communication equipment. Below is a layout of the 37-pin configuration for the RS-449. It starts with pin 1, which is located at the top-left corner of the connector.
Computer acronyms, DTE, Hardware terms, RS-232, RS-422, RS-423, RS-485