enum {
        STAC_92HD83XXX_REF,
+       STAC_92HD83XXX_PWR_REF,
        STAC_92HD83XXX_MODELS
 };
 
 
 static unsigned int *stac92hd83xxx_brd_tbl[STAC_92HD83XXX_MODELS] = {
        [STAC_92HD83XXX_REF] = ref92hd83xxx_pin_configs,
+       [STAC_92HD83XXX_PWR_REF] = ref92hd83xxx_pin_configs,
 };
 
 static const char *stac92hd83xxx_models[STAC_92HD83XXX_MODELS] = {
        [STAC_92HD83XXX_REF] = "ref",
+       [STAC_92HD83XXX_PWR_REF] = "mic-ref",
 };
 
 static struct snd_pci_quirk stac92hd83xxx_cfg_tbl[] = {
                AC_VERB_SET_CONNECT_SEL, num_dacs);
 
        spec->init = stac92hd83xxx_core_init;
-       switch (codec->vendor_id) {
-       case 0x111d7605:
-               break;
-       default:
-               spec->num_pwrs--;
-       }
-
        spec->mixer = stac92hd83xxx_mixer;
        spec->num_pins = ARRAY_SIZE(stac92hd83xxx_pin_nids);
        spec->num_dmuxes = ARRAY_SIZE(stac92hd83xxx_dmux_nids);
                return err;
        }
 
+       switch (codec->vendor_id) {
+       case 0x111d7604:
+       case 0x111d7605:
+               if (spec->board_config == STAC_92HD83XXX_PWR_REF)
+                       break;
+               spec->num_pwrs = 0;
+               break;
+       }
+
        err = stac92xx_parse_auto_config(codec, 0x1d, 0);
        if (!err) {
                if (spec->board_config < 0) {