Index: sys/cam/ata/ata_da.c
===================================================================
--- sys/cam/ata/ata_da.c
+++ sys/cam/ata/ata_da.c
@@ -472,8 +472,8 @@
 		{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG MZ7WD*", "*" },
 		/*quirks*/ADA_Q_4K
 	},
- 	{
- 		/*
+	{
+		/*
 		 * Samsung 850 SSDs
 		 * 4k optimised
 		 */
@@ -498,6 +498,14 @@
 	},
 	{
 		/*
+		 * Samsung PM851 Series SSDs
+		 * 4k optimised
+		 */
+		{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG MZ7TE*", "*" },
+		/*quirks*/ADA_Q_4K
+	},
+	{
+		/*
 		 * SuperTalent TeraDrive CT SSDs
 		 * 4k optimised & trim only works in 4k requests + 4k aligned
 		 */
Index: sys/cam/scsi/scsi_da.c
===================================================================
--- sys/cam/scsi/scsi_da.c
+++ sys/cam/scsi/scsi_da.c
@@ -1144,8 +1144,8 @@
 		{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "SAMSUNG MZ7WD*", "*" },
 		/*quirks*/DA_Q_4K
 	},
- 	{
- 		/*
+	{
+		/*
 		 * Samsung 850 SSDs
 		 * 4k optimised & trim only works in 4k requests + 4k aligned
 		 */
@@ -1170,6 +1170,14 @@
 	},
 	{
 		/*
+		 * Samsung PM851 Series SSDs
+		 * 4k optimised
+		 */
+		{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "SAMSUNG MZ7TE*", "*" },
+		/*quirks*/DA_Q_4K
+	},
+	{
+		/*
 		 * SuperTalent TeraDrive CT SSDs
 		 * 4k optimised & trim only works in 4k requests + 4k aligned
 		 */