At Netshop over we have over 5,200 products in stock including a range of adapters used for modular RS232, RS422 and RS485 connections. These include RJ45-DB25P adaptors to attach devices with 25 pin D connectors to each other and RJ45-DB9P adaptors for devices with 9 pin D connectors. All our modular adaptors are easy to configure and identify and can be reconfigured if necessary.