Index: sys/cam/ata/ata_da.c
===================================================================
--- sys/cam/ata/ata_da.c
+++ sys/cam/ata/ata_da.c
@@ -685,6 +685,14 @@
 	},
 	{
 		/*
+		 * Micron Enterprise SSDs
+		 * 4k optimised
+		 */
+		{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Micron_M???DC_MT*", "*" },
+		/*quirks*/ADA_Q_4K
+	},
+	{
+		/*
 		 * Samsung drive that doesn't support READ LOG EXT or
 		 * READ LOG DMA EXT, despite reporting that it does in
 		 * ATA identify data:
Index: sys/cam/scsi/scsi_da.c
===================================================================
--- sys/cam/scsi/scsi_da.c
+++ sys/cam/scsi/scsi_da.c
@@ -1274,6 +1274,14 @@
 	},
 	{
 		/*
+		 * Micron Enterprise SSDs
+		 * 4k optimised
+		 */
+		{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "Micron_M???DC_MT*", "*" },
+		/*quirks*/DA_Q_4K
+	},
+	{
+		/*
 		 * Hama Innostor USB-Stick 
 		 */
 		{ T_DIRECT, SIP_MEDIA_REMOVABLE, "Innostor", "Innostor*", "*" },