System Level Solutions [India] Pvt. Ltd offers Data Conversion High Speed Mezzanine Card. System Level Solutions [India] Pvt. Ltd is an ISO 9001: 2000 certified company. The Data Conversion High Speed Mezzanine Card can be used for developing DSP applications with Altera Development boards that feature the High Speed Mezzanine Card [HSMC] connector. The Data Conversion Card is designed to provide a set of Analog to Digital and Digital to Analog interfaces including an Audio Codec interface.