Diebold Nixdorf EPP V8 MEX ST2 EPPV8 01750346451 1750346451 ATM Parts The 01750346451 Diebold Nixdorf EPP V8 MEX ST2 is an Encrypting PIN Pad designed for Diebold Nixdorf ATM systems. The part number is specifically identified as EPPV8 MEX ST2 in Diebold Nixdorf DN-series parts references. Unlike a standard ATM keypad, the EPP is a security-critical component used for customer PIN entry. The MEX ST2 configuration is intended for the corresponding Mexican ATM configuration.