The 2500-PADP is a Power Supply Adapter that enables the use of CTI 2500 Series® power supplies within legacy Texas Instruments Series 500 I/O bases. This adapter offers a seamless upgrade path, allowing you to modernize your Series 500 system without a complete system replacement. You can immediately replace failed Series 500 power supplies with reliable and compatible CTI 2500 Series® replacements. Subsequently, when budget and/or time permits, you can then transition to a full CTI 2500 Series® system without losing your initial investment in the replaced power supplies.