I have been tasked with installing an NCR 76 (7876) Scanner/Scale in my grandfather's store. The device was purchased over mercadolibre.com and was not sent with documentation, but was supplied with some cables similar to this, without the splitting part:
On that cable, one side has an RJ type modular conector called 10C10P and on the other side is the connector in question. The cabling follows the RS232 Standard.
Once I figure out what connector it is I can see how it reads data, and I can work on a solution where I change de conector to a USB interface, so that I can hook up the Scanner/Scale via USB to a PC.
Here is the User Guide: https://drive.google.com/file/d/1n7yshrSeB5ulE-ajyHoGEf6zJtdGUfYz/view?usp=sharing