diff --git a/smartmontools/CHANGELOG b/smartmontools/CHANGELOG
index 68643c032891d83b8fb5a0f0c5dcc7c1e749d9da..6b3c1dbc87bcec8e4174c907e7fa1fe447b67f4f 100644
--- a/smartmontools/CHANGELOG
+++ b/smartmontools/CHANGELOG
@@ -43,6 +43,12 @@ NOTES FOR FUTURE RELEASES: see TODO file.
 
 <DEVELOPERS: ADDITIONS TO THE CHANGE LOG GO JUST BELOW HERE, PLEASE>
 
+  [MS] knowndrives.cpp updates:
+       - Western Digital MyPassport Essential hard drive (USB interface)
+       - Seagate Momentus 7200.4 series
+       - Western Digital Raptor X
+       - Intel X25-E SSD
+
   [CF] knowndrives.cpp updates:
        - New Seagate 7200.11 firmware version
        - Update IBM link
diff --git a/smartmontools/knowndrives.cpp b/smartmontools/knowndrives.cpp
index 120ba45e56c44f83691401ee411422286a75691f..cc15cc749a7b81aae17b7db26e1ce775958bae49 100644
--- a/smartmontools/knowndrives.cpp
+++ b/smartmontools/knowndrives.cpp
@@ -73,6 +73,10 @@ static const drive_settings builtin_knowndrives[] = {
     "OCZ-VERTEX.*",
     "", "", ""
   },
+  { "Intel X25-E SSD",
+    "SSDSA2SH(032|064)G1.* INTEL",
+    "", "", ""
+  },
   { "Transcend Solid-State Drive",
     "TS(8|16|32|64|128)GSSD25-(M|S)",
     "", "", ""
@@ -929,6 +933,10 @@ static const drive_settings builtin_knowndrives[] = {
     "ST9((80|120|160)411|(250|320)421)ASG?",
     "", "", ""
   },
+  { "Seagate Momentus 7200.4 series",
+    "ST9(160412|250410|320423|500420)ASG?",
+    "", "", ""
+  },
   { "Seagate Medalist 1010, 1721, 2120, 3230 and 4340",  // ATA2, with -t permissive
     "ST3(1010|1721|2120|3230|4340)A",
     "", "", ""
@@ -1219,6 +1227,10 @@ static const drive_settings builtin_knowndrives[] = {
     "WDC WD((360|740|800)GD|(360|740|1500)ADF[DS])-.*",
     "", "", ""
   },
+  { "Western Digital Raptor X",
+    "WDC WD1500AHFD-.*",
+    "", "", ""
+  },
   { "Western Digital VelociRaptor family",
     "WDC WD((1500|3000)B|3000G)LFS-.*",
     "", "", ""
@@ -1243,6 +1255,10 @@ static const drive_settings builtin_knowndrives[] = {
     "WDC WD(8|12|16|25|32)00B[EJ]KT-.*",
     "", "", ""
   },
+  { "Western Digital MyPassport Essential hard drive (USB interface)",
+    "WDC WD3200BMVU-.*",
+    "", "", ""
+  },
   { "Quantum Bigfoot series",
     "QUANTUM BIGFOOT TS10.0A",
     "", "", ""