M200V4

// firmware/target/arm/as3525/system-as3525.c [520]

        /* Set CVDD1 power supply */
#ifdef HAVE_ADJUSTABLE_CPU_VOLTAGE
#if defined(SANSA_CLIPZIP)
        ascodec_write_pmu(0x17, 1, 0x80 | 20);
#elif defined(SANSA_CLIPPLUS)
        if (amsv2_variant)
            ascodec_write_pmu(0x17, 1, 0x80 | 22);
        else
            ascodec_write_pmu(0x17, 1, 0x80 | 26);
#elif defined(SANSA_FUZEV2)
        /*Some FuzeV2 devices have trouble reading SD at low voltage*/
    ascodec_write_pmu(0x17, 1, 0x80 | 26);
#elif defined(SANSA_M200V4)
    ascodec_write_pmu(0x17, 1, 0x80 | 26);
#else
        ascodec_write_pmu(0x17, 1, 0x80 | 22);
#endif
#endif