diff --git a/bdk/storage/sdmmc.c b/bdk/storage/sdmmc.c
index 6cde1b4..58e813e 100644
--- a/bdk/storage/sdmmc.c
+++ b/bdk/storage/sdmmc.c
@@ -845,7 +845,7 @@ int _sd_storage_get_scr(sdmmc_storage_t *storage, u8 *buf)
 	_sd_storage_parse_scr(storage);
 	//gfx_hexdump(0, storage->raw_scr, 8);
 
-	return _sdmmc_storage_check_result(tmp);
+	return _sdmmc_storage_check_card_status(tmp);
 }
 
 int _sd_storage_switch_get(sdmmc_storage_t *storage, void *buf)
@@ -861,12 +861,12 @@ int _sd_storage_switch_get(sdmmc_storage_t *storage, void *buf)
 	reqbuf.is_multi_block = 0;
 	reqbuf.is_auto_cmd12 = 0;
 
-	if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, &reqbuf, 0))
+	if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, &reqbuf, NULL))
 		return 0;
 
 	u32 tmp = 0;
 	sdmmc_get_rsp(storage->sdmmc, &tmp, 4, SDMMC_RSP_TYPE_1);
-	return _sdmmc_storage_check_result(tmp);
+	return _sdmmc_storage_check_card_status(tmp);
 }
 
 int _sd_storage_switch(sdmmc_storage_t *storage, void *buf, int mode, int group, u32 arg)
@@ -885,12 +885,12 @@ int _sd_storage_switch(sdmmc_storage_t *storage, void *buf, int mode, int group,
 	reqbuf.is_multi_block = 0;
 	reqbuf.is_auto_cmd12 = 0;
 
-	if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, &reqbuf, 0))
+	if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, &reqbuf, NULL))
 		return 0;
 
 	u32 tmp = 0;
 	sdmmc_get_rsp(storage->sdmmc, &tmp, 4, SDMMC_RSP_TYPE_1);
-	return _sdmmc_storage_check_result(tmp);
+	return _sdmmc_storage_check_card_status(tmp);
 }
 
 void _sd_storage_set_current_limit(sdmmc_storage_t *storage, u16 current_limit, u8 *buf)
@@ -1064,6 +1064,44 @@ int _sd_storage_enable_hs_high_volt(sdmmc_storage_t *storage, u8 *buf)
 	return sdmmc_setup_clock(storage->sdmmc, SDHCI_TIMING_SD_HS25);
 }
 
+u32 sd_storage_ssr_get_au(sdmmc_storage_t *storage)
+{
+	u32 au_size = storage->ssr.uhs_au_size;
+
+	if (!au_size)
+		au_size = storage->ssr.au_size;
+
+	if (au_size <= 10)
+	{
+		u32 shift = au_size;
+		au_size = shift ? 8 : 0;
+    	au_size <<= shift;
+	}
+	else
+	{
+		switch (au_size)
+		{
+		case 11:
+			au_size = 12288;
+			break;
+		case 12:
+			au_size = 16384;
+			break;
+		case 13:
+			au_size = 24576;
+			break;
+		case 14:
+			au_size = 32768;
+			break;
+		case 15:
+			au_size = 65536;
+			break;
+		}
+	}
+
+	return au_size;
+}
+
 static void _sd_storage_parse_ssr(sdmmc_storage_t *storage)
 {
 	// unstuff_bits supports only 4 u32 so break into 2 x 16byte groups
@@ -1113,6 +1151,9 @@ static void _sd_storage_parse_ssr(sdmmc_storage_t *storage)
 	storage->ssr.video_class = unstuff_bits(raw_ssr1, 384 - 384, 8);
 
 	storage->ssr.app_class = unstuff_bits(raw_ssr2, 336 - 256, 4);
+
+	storage->ssr.au_size = unstuff_bits(raw_ssr1, 428 - 384, 4);
+	storage->ssr.uhs_au_size = unstuff_bits(raw_ssr1, 392 - 384, 4);
 }
 
 static int _sd_storage_get_ssr(sdmmc_storage_t *storage, u8 *buf)
diff --git a/bdk/storage/sdmmc.h b/bdk/storage/sdmmc.h
index 76d2f91..5e8114f 100644
--- a/bdk/storage/sdmmc.h
+++ b/bdk/storage/sdmmc.h
@@ -95,6 +95,8 @@ typedef struct _sd_ssr
 	u8 uhs_grade;
 	u8 video_class;
 	u8 app_class;
+	u8 au_size;
+	u8 uhs_au_size;
 	u32 protected_size;
 } sd_ssr_t;
 
diff --git a/nyx/nyx_gui/frontend/gui_info.c b/nyx/nyx_gui/frontend/gui_info.c
index e7d1c56..edfa081 100644
--- a/nyx/nyx_gui/frontend/gui_info.c
+++ b/nyx/nyx_gui/frontend/gui_info.c
@@ -1574,14 +1574,22 @@ static lv_res_t _create_window_sdcard_info_status(lv_obj_t *btn)
 			break;
 		}
 
+		bool uhs_au_mb = false;
+		u32 uhs_au_size = sd_storage_ssr_get_au(&sd_storage);
+		if (uhs_au_size >= 1024)
+		{
+			uhs_au_mb = true;
+			uhs_au_size /= 1024;
+		}
+
 		s_printf(txt_buf,
-			"#00DDFF v%d.0#\n%02X\n%d MiB\n%X (CP %X)\n%d\n%d MB/s (%d MHz)\n%d\nU%d\nV%d\nA%d\n%s",
+			"#00DDFF v%d.0#\n%02X\n%d MiB\n%X (CP %X)\n%d\n%d MB/s (%d MHz)\n%d (AU: %d %s\nU%d\nV%d\nA%d\n%s",
 			sd_storage.csd.structure + 1, sd_storage.csd.cmdclass,
 			sd_storage.sec_cnt >> 11, sd_storage.sec_cnt, sd_storage.ssr.protected_size >> 9,
 			sd_storage.ssr.bus_width, sd_storage.csd.busspeed,
 			(sd_storage.csd.busspeed > 10) ? (sd_storage.csd.busspeed * 2) : 50,
-			sd_storage.ssr.speed_class, sd_storage.ssr.uhs_grade, sd_storage.ssr.video_class,
-			sd_storage.ssr.app_class, wp_info);
+			sd_storage.ssr.speed_class, uhs_au_size, uhs_au_mb ? "MiB)" : "KiB)", sd_storage.ssr.uhs_grade,
+			sd_storage.ssr.video_class, sd_storage.ssr.app_class, wp_info);
 
 		lv_label_set_text(lb_val2, txt_buf);