Model name Capacity RPM Buffer Size
WD2500JB 250GB 7200 8 MB
WD2000JB 200GB 7200 8 MB
WD1800JB 180GB 7200 8 MB
WD1200JB 120GB 7200 8 MB
WD1000JB 100GB 7200 8 MB
WD800JB 80GB 7200 8 MB
WD600JB 60GB 7200 8 MB
WD400JB 40GB 7200 8 MB

WD Caviar High-Performance
 Model name Capacity RPM Buffer Size
WD2500BB 250GB 7200 2 MB
WD2000BB 200GB 7200 2 MB
WD1800BB 180GB 7200 2 MB
WD1600BB 160GB 7200 2 MB
WD1200BB 120GB 7200 2 MB
WD1000BB 100GB 7200 2 MB
WD800BB 80GB 7200 2 MB
WD600BB 60GB 7200 2 MB
WD400BB 40GB 7200 2 MB
WD300BB 30GB 7200 2 MB
WD200BB 20GB 7200 2 MB

WD Caviar Mainstream
 Model name Capacity RPM Buffer Size
WD1200AB 120GB 5400 2 MB
WD1000AB 100GB 5400 2 MB
WD800AB 80GB 5400 2 MB
WD600AB 60GB 5400 2 MB
WD400AB 40GB 5400 2 MB
WD300AB 30GB 5400 2 MB
WD200AB 20GB 5400 2 MB

WD Protégé Value
 Model name Capacity RPM Buffer Size
WD400EB 40GB 5400 2 MB
WD300EB 30GB 5400 2 MB
WD200EB 20GB 5400 2 MB

WD FireWire
 Model name Capacity RPM Buffer Size
WD2000B002 200GB 7200 2 MB
WD1200B002 120GB 7200 2 MB
WD800B002 80GB 7200 2 MB

WD USB
 Model name Capacity RPM Buffer Size
WD1200B005 120GB 7200 2 MB
WD800B005 80GB 7200 2 MB
WD400B005 40GB 7200 2 MB

WD Combo USB/FireWire
 Model name Capacity RPM Buffer Size
WDXC2500JBRN 250GB 7200 8 MB
WDXC2000BBRN 200GB 7200 2 MB
WDXC1200BBRN 120GB 7200 2 MB

WD Serial ATA
 Model name Capacity RPM Buffer Size
WD2500JD 250GB 7200 8 MB
WD2000JD 200GB 7200 8 MB
WD1600JD 160GB 7200 8 MB
WD1200JD 120GB 7200 8 MB
WD360GD 36GB 10,000 8 MB

Older Models
 Model name
WDE18310-0040 WDE18310-0042 WDE18310-0050 WDE18310-0051
WDE18310-0052 WDE18310-0053 WDE18310-AV0041 WDE18310-AV0043
WDE18300-0048 WDE18300-0049 WDE18300-AV0038 WDE18300-AV0039
WD183FN-00AS WD183FG-00AS WD183FH-00AS WDE9180-0048
WDE9180-0049 WDE9180-AV0038 WDE9180-AV0039 WDE9150-0040
WDE9150-0042 WDE9150-AV0041 WDE9150-AV0043 WD91FB-00AS
WD91FG-00AS WD91FH-00AS WDE9100-0024 WDE9100-0025
WDE9100-AV0030 WDE9100-AV0034 WDE9100-0024 WDE9100-0025
WDE4550-0024 WDE4550-0025 WDE4550-AV0030 WDE4360-003
WDE4360-007 WDE4360-008 WDE4360-023 WDE2170-003
WDE2170-007 WDE2170-008 WDE2170-023  


Finally, even more Western Digital disk drives with part number references
WD1000BB WD100AA WD100EB WD102AA WD102BB WD1200BB WD1200JB WD1200JD WD150EB WD1600BB WD1600JB WD1600JD WD2000BB WD2000JB WD2000JD WD200BB WD200EB WD2500BB WD2500JB WD2500JD WD300AB WD300BB WD360GD WD400AB WD400BB WD400EB WD400JB WD600AB WD600BB WD600JB WD64AA WD740GD WD75AA WD800AB WD800BB WD800JB WD800JB WD91AW WDA2120 WDAC11000 WDAC11200 WDAC1170 WDAC1210 WDAC12100 WDAC1210F WDAC1270 WDAC1365 WDAC140 WDAC1425 WDAC160 WDAC21000 WDAC2120 WDAC21200 WDAC21600 WDAC2170 WDAC21700 WDAC2200 WDAC22000 WDAC22100 WDAC2250 WDAC22500 WDAC23200 WDAC2340 WDAC2420 WDAC24300 WDAC2540 WDAC2635 WDAC2700 WDAC280 WDAC2850 WDAC31000 WDAC310200 WDAC31200 WDAC31600 WDAC32100 WDAC32500 WDAC33100 WDAC33200 WDAC3400 WDAC34000 WDAC34200 WDAC34300 WDAC35100 WDAC36400 WDACWD93024A WDACWD93028 WDACWD93044A WDACWD9348A WDACWD95048A WDACWDAH260 WDACWDE2170 WDACWDE436003 WDACWDE436007 WDAH260 WDAH280 WDAL1100 WDAL2120 WDAL2170 WDAL2200 WDAL2540 WDAP4200 WDAW2160 WDE21700003 WDE21702308 WDE21708307 WDE43600003 WDE43600007 WDE43600703 WDS280