Index: head/sys/cam/ata/ata_da.c =================================================================== --- head/sys/cam/ata/ata_da.c +++ head/sys/cam/ata/ata_da.c @@ -637,6 +637,14 @@ }, { /* + * Samsung 750 SSDs + * 4k optimised, NCQ TRIM seems to work + */ + { T_DIRECT, SIP_MEDIA_FIXED, "*", "Samsung SSD 750*", "*" }, + /*quirks*/ADA_Q_4K + }, + { + /* * Samsung 830 Series SSDs * 4k optimised, NCQ TRIM Broken (normal TRIM is fine) */ Index: head/sys/cam/scsi/scsi_da.c =================================================================== --- head/sys/cam/scsi/scsi_da.c +++ head/sys/cam/scsi/scsi_da.c @@ -1260,6 +1260,14 @@ }, { /* + * Samsung 750 Series SSDs + * 4k optimised & trim only works in 4k requests + 4k aligned + */ + { T_DIRECT, SIP_MEDIA_FIXED, "ATA", "Samsung SSD 750*", "*" }, + /*quirks*/DA_Q_4K + }, + { + /* * Samsung 830 Series SSDs * 4k optimised & trim only works in 4k requests + 4k aligned */