Copyright (c) 1991-1999 by Seagate Technology, Inc.  All rights reserved.

 	1999 Changes

04/02/99	Updated Barracuda 18LP access times and
		power specs.

03/25/99	Added ST39175FC and ST318275FC Barracuda
		18LP.  Added ST136475FC Barracuda 36.
		Added ST150176FC Barracuda 50.  Added
		ST318203FC Cheetah 18LP.  Added ST136403FC
		Cheetah 36.  Corrected port limitations phrase on 
		Cheetah 18 and Barracuda 18 FC-AL drives.
		Corrected access times, power and optional cache
		size on Cheetah 18LP family.  Updated missing
		specs on ST136403LW, ST136475LW and 
		ST150176LW.

03/24/99	Added ST310231A and ST310232A.  Corrected
		internal transfer rate and op shock for ST34310/2A,
		ST38420/2A, ST313030/2A and ST317240/2A.
		Corrected "lb/gm" label typo on several models.
		Corrected weight, active watts and acoustics on
		ST34312A, ST38422A, ST313032A and 
		ST317242A.  Added ST39103LW Cheetah 18LP.

03/07/99	Added ST32112A, ST34311A, ST36421A 
		and ST38421A.  Added ST38630A.  Added
		ST34312A, ST38422A, ST31032A and
		ST317242A.

01/14/99	Added ST34310A, ST38420A, 313030A, and 
		ST317240A.  Added Cheetah 36 ST136403LW.
		Corrected Barracuda 18 GB typo.  Updated
		Medalist Pro SCSI power specs and added
		new LVD models ST34520LW and ST39140LW.
		Corrected Barracuda 18LP ST39175LW and
		ST318275LW access times, internal transfer
		rate, shock and acoustic specs.  Updated
		ST33210A, ST36422A, ST310230A and
		ST313640A power specs.


 	1998 Changes

11/30/98	Corrected same minor misspelling on ST118202LW,
		ST136475LW and ST150176LW.  Corrected LBA
		translation on ST92120AG.  Corrected translation total
		bytes on ST33210A.

11/08/98	Added ST31013A, ST32111A, ST33223A and 
		ST34323A.  Added Barracuda 18LP ST39175LW and
		ST318275LW.  Added Barracuda 36 ST136475LW.  
		Added Barracuda 50 ST150176LW.  Added Cheetah 
		18LP ST318203LW.

11/01/98	Corrected ST32110A, ST33221A, ST34321A, 
		ST36531A and ST38641A TPI, dimensions, weight, 
		operating shock, acoustics and MTBF.  Corrected 
		ST32510A, ST35120A, ST37630A and ST310240A 
		acoustics.  Added ST33210A, ST36422A, ST310230A 
		and ST313640A. Updated Seagate phone numbers.

09/05/98	Added Cheetah 9LP ST39102FC.  Added Cheetah 18
		ST118202FC.  Added ST37630A, ST35120A and 
		ST32510A.  Corrected ST310240A internal transfer, 
		power. Corrected ST39173FC, ST118273FC 
		cyls, power and dimensions.  

06/01/98	Added Cheetah 9LP ST34502LW.  Corrected
		ST39102LW BPI, single track write, non-op shock,
		3" media.  CorrectedST118202LW cylinders, SPT,
		access times, power requirements and dissipation,
		acoustics, shock, height and width, 3" media.
		Corrected ST310240A power and acoustics.
		Corrected ST39140A, ST36530A and ST34520A
		width.  Corrected ST39140N/W, ST36530N/W and
		ST34520N/W MTBF, sectors per drive, latency
		and dimensions.

04/22/98	Added Medalist ST310240A.  Corrected dimensions,
		access times, active and idle watts, and non-op shock
		for ST38641A, ST36531A, ST34321A, ST33221A and 
		ST32110A.  Corrected MTBF, TPI and Op Shock for
		ST34520A, ST36530A and ST39140A.  Corrected
		access times for ST34520N/W, ST36530N/W and
		ST39140N/W.

04/15/98	Updated Barracuda 18 Family - ST118273N/W corrected
		cylinders and SPT, added power dissipation specs.  
		Updated Barracuda 9LP Family - ST39173N/W and 
		ST34573N/W corrected cylinders, SPT, access times and
		weight, also added power dissipation specs.  Corrected
		total sectors for Hawk 4XL ST34555N/W.  Corrected
		terminator verbiage for Elite ST410800N/W, ST423451N/W
		and ST446452W.

02/11/98	Removed TRMPWR pin-26 reference on Baracuda wide
		SCSI.  Corrected Alternate Capacity pin numbering on
		ST33230A, ST33232A, ST34340A and ST34342A.
		Corrected ST52520A Alternate Capacity jumper cyls.

01/18/98	Changed J2 Term Power orientation on ST19101N/W,
		ST19171N/W and ST11273N/W for clarity.  Corrected
		MedalistSL family power specs.  Switched to new 
		corporate branding logo.  Seagate Software phone 
		number listings updated.  Added Elite 47 ST446452W.
		Added Marathon ST94030AG, ST93230AG and
		ST92120AG.  Corrected ST38641A LBA translation.
		Added Cheetah 9LP ST39102LW.  Updated DiskStor
		kit number cross reference. Updated Medalist Pro family
		ST34520N/W, ST36530N/W and ST39140N/W power and
		acoustics.  Updated ST19171FC cylinders, seek times and
		power.  Added Cheetah 18 ST118202LW. Updated ST32520A
		seek time.


1997 Changes

12/24/97	Added Barracuda 9LP family ST39173N/W/FC,
		ST34573N/W.  Updated Hawk 4XL ST34555N/W
		and Medalist ST32520A density specs.  Worldwide 
		phone number listings updated.  Updated Elite 23
		ST423451N/W

11/25/97	Corrected Term Power and added J7 option jumper
		on ST423451N/W.  Added Hawk 4XL ST34555N and 
		ST34555W.  Corrected Active Power spec for ST36540A,
		ST35130A and ST33220A.  Added Medalist Pro family
		ST34520N/W, ST36530N/W and ST39140N/W.  Added
		Barracuda 18 family ST118273N/W/FC.

10/23/97	Added Medalist Pro ST39140A, ST36530A and 
		ST34520A.  Corrected acoustic specs for Cayman
		family SCSI drives (ST14207N/W and ST14209N/W).
		Added ST33221A.  Added Internal transfer rate, max
		UDMA mode and corrected average write time for
		ST38641A, ST36531A, ST34321A and ST32110A.

10/04/97	Corrected ST36451A acoustic spec.  Corrected CP30544 
		default cylinders.  Added ST32532A.  Removed extra
		jumper view from ST34572W.  Added ST38641A,
		ST36531A, ST34321A and ST32110A.  Corrected
		ST52160N weight.

09/24/97	Corrected ST52160N MTBF.  Corrected ST5xxxx form
		factor height.  New phone numbers for USA SeaBOARD,
		SeaFAX, SeaTDD and customer FAX.  New area code
		for Westford, MA office.  Updated DiskStor kit model
		number list.  Added Ultra-DMA mode level to new ATA
		models.  Added single ended description to interface
		cables and pins section.  Added L and K to Seagate
		and E and U to Conner model number interpretation 
		charts.  Corrected old ST1480N family J7 SCSI ID jumper.
		Added Conner FilePro E SCA configuration to search
		capability.

08/07/97	Updated Barracuda 4LP Fibre Channel buffer size, seek 
		times and power specs.  Added MR head info to Cheetah
		and Barracuda 9 families.  Removed ST32271FC.  Seek
		times and power specs for ST36540A, ST35130A and
		ST33220A.  Updated Cheetah 4LP SCSI shock, BTU
		Thermal and Total Sectors.

07/31/97	Updated Barracuda 4LP non-op shock spec and corrected
		average sectors per track.  Updated new USA SeaBOARD
		BBS number.  Corrected ST19171N cylinders spec.  
		Corrected reversed TERM PWR Enable on most old Conner 
		SCSI drives.

07/25/97	Corrected power specs for ST52160N/WC.  Added
		ST36540A, ST35130A, ST34342A, ST34330A, ST33232A,
		ST33220A, ST32520A, ST32122A, ST31722A, ST31210A 
		and ST31012A.

06/05/97	Added ST36451A.  Corrected New Jersey sales office 
		address.

05/23/97	Added full stroke access time and corrected power specs 
		for ST31010A, ST31721A,	ST32120A, ST33230A,
		ST34340A, ST32531A and ST33240A.  Updated default
		cylinders for ST31721A.  Updated power specs on 
		Cheetah ST19101N/W.

05/01/97	Corrected Cheetah cache buffer to show physical size.

04/28/97	Added ST31010A, ST31277A, ST31721A, ST91420AG,
		ST92130AG.   Corrected ST31274A (CFA1275A) and 
		ST3853A (CFA850A) max PIO mode.

04/03/97	Corrected ST32531A and ST33240A Alternate Capacity
		jumper.  Added LBA translations for CFA1080A and
		CFA810A.  Added Term info for Cheetah ST34501WD.
		Corrected orientation of J2 options jumper on all Cheetah
		4LP, Barracuda 4LP and Barracuda 4XL family drives.
		Changed 3.5 disc size to 2.5 on certain Marathon and 
		Kiwi family drives.  Corrected A/C jumper location and
		misc specs on ST34340A and ST33230A.

03/11/97	Updated Cheetah 9 and Cheetah 4LP specs and jumpers.  
		Added Barracuda 4XL family drives: ST32272N/W and
		ST34572N/W.  Updated specs and jumpers for ST91430AG,
		ST91350AG, ST91080AG and ST9840AG.  Corrected
		power and access specs for ST35040A and ST36450A.

02/17/97	Corrected ST32132A power specs.  Added Cayman ST32109N
		and ST32109W.  Corrected all other Cayman family drives:
		ST14207N/W, ST14209N/W, ST32105N/W and ST32107N/W.
		Added Medalist ST32120A and ST33230A.  Added Medalist
		Pro ST36450A and ST35040A.  Corrected Barracuda 4LP
		family access times.  Corrected ST52520A and ST52160A
		power specs.

01/24/97	Corrected ST3270A (CFS270A) jumpers.  Finished Cuda 9
		(ST19171N/W) specs and jumpers.  Added SCSI Narrow SCA
		and SCSI Wide Differential to Cables and Pins section.  Added
		search reference for DiskStor retail kits (DSxxxxxA).  Added 
		old ST325X.

01/13/97	Corrected ST52160N/WC SCSI jumpers.  Clarified ST32170A
		jumper descriptions.

01/06/97	Corrected Cheetah 9 family spindle speed and latency.  Fixed
		CP30204 jumpers.  Added missing models to SCSI table of 
		contents screen.

1996 Changes


12/18/96	Added Alternate Capacity jumper to ST32531A and ST33240A.
		Corrected ST31274A and ST3853A buffer size and acoustic info.

12/16/96	Added ST91430AG and ST91080AG.  Corrected miscellaneous
		Marathon family specs for drives >800MB. (ST9840AG to
		ST92255AG).  

12/11/96	Added Fibre Channel Interface section.  Added Cheetah Family 
		section.  Added the ST32171FC, ST32271N/W/FC, ST34371FC, 
		ST34501N/W/FC, ST34571N/W/FC, ST15150FC, ST19101N/W/FC.
		Removed the ST18771N and ST18771W.

12/09/96	Added ST52160N, ST52160WC, ST32531A, ST33240A and 
		ST34340A.  Removed the ST32530A,  ST33440A and 
		ST34250A.  Updated the ST31720A.

10/03/96	Updated Conner / Seagate model numbers conversion
		table.

09/16/96	Added the ST19171FC and Fibre Channel SCA to pins and
		cables section.  Corrections to Barracuda 4LP family specs,
		Barracuda 9 family and ST43400N T-Res info.  Added ST31060A.
		Updated Elite 23 family specs.  Fixed T-Res info on all
		Barracuda half height drives.

09/11/96	Added the ST14209N, ST14209W, ST31720A, ST3852A,
		ST32132A, ST31082A and ST9810AG.

09/09/96	Added the ST52160A and ST52520A.   Added drawing for 80 to 
		50 pin adapter shipped with Barbados family SCSI drives.  Added 
		3-pin power plug option to ST31274A, ST3853A, ST3544A and 
		ST3543A.  Added Term Power Fuse to Cayman ST14207N/W.  
		Corrected ST32105N and ST32107N LED driver jumper.  
		Documented default settings for Medalist SL family drives.

09/06/96	Updated corporate phone numbers.  Corrected many spelling errors 
		in the Glossary section.  Fixed broken link to ST4384E.  Corrected 
		ST31276A family name.  Incorporated Medalist Pro family name.  
		Fixed ATA jumper on CFSxxxxA Filepro and Cabo drives greater 
		than 528MB.

05/20/96	Corrected Hawk 2XL single track access times.  Many small misc 
		corrections to older historical Conner Peripherals models.

05/07/96	Added BTUs and power dissipation to Barracuda specs where
		available.

04/10/96	Added ST32161A (CFA2161A).  Misc corrections to old Conner specs.

03/22/96	Added Drive Anatomy section. Added Seagate Software Companies.
		Added Conner phone numbers.  Updated Hawk 2XL and Barracuda 4LP
		models.

03/14/96	Added Sectors per Track to former Conner SCSI drives converted
		to Seagate model #'s.  Removed 12V reference on several  2.5" drives.  
		Added ST31276A, ST3636A, ST3850A, ST32530A, ST33440A, 
		ST34250A, ST9840AG, ST91350AG, ST91685AG, ST92255AG,
		ST423451N, ST423451W.

03/11/96	Added SCSI Wide and SCSI Wide Single Connector Attachment (SCA)
		to Cables and Pins section.  Added links to model conversion charts.

03/05/96	Added Old Conner Peripherals drive models not converted to new Seagate
		model numbers

02/20/96	Added former Conner Peripherals models which have been assigned
		an equivalent Seagate STxxxx model number designation.  Corrected
		option jumpers on ST31640A and ST32140A.  Added
		Conner to Seagate conversion lists.  Added Conner model number 
		interpretation.

02/07/96	Updated all Hawk 2XL family drives.

01/09/96	Corrected ST51080N default settings.

01/03/96	Added ST19171N, ST19171W, ST31231N, ST31055N, ST31055W,
		ST32155N, ST32155W. Corrected Elite 2 T-Res descriptions. 
		Added ST31220A LBA translation, Removed Barracuda 8.
		Corrected Barracuda 2 bytes per track. Corrected J2
		connector number on Medalist SL drives. Corrected Synch
		Spindle ref on Barracuda 2LP.



	1995 Changes

11/08/95	Modified Glossary section

11/02/95	Added WC configuration to Barracuda 4, ST15150WC
		Added ST31240A, ST31640A, ST51270A, ST9816A,
		ST32171N, ST32171W, ST34371N, ST34371W, ST18771N, 
		ST18771W, ST31051N, ST31051W, ST32151N, ST32151W,
		ST3630A, ST51080N. Corrected Term Power detail for Barracuda
		2LP Wide Differential models. Added Remote LED polarity 
		info on ST5660N.

10/12/95	Corrected Elite 9 differential models to show
		T-Res info.

10/05/95	Updated ST5540A and ST51080A to show
		abnormal shock spec and cache buffer size 
		(Medalist sl family drives formerly known as 
		Decathlon family)  Added ST31270A and ST5851A.

 8/10/95	Corrected the Enable T-Res jumper on the ST31230W
		ST32430W.

 6/24/95	Added Cable Select info to ST9140AG and ST9190AG.
		Corrected J2 options jumpers on ST15230W. Added
		Micro House phones. Added new SCSI ID order for 
		ST3610N.

05/14/95	Added Type A and B board configurations to 
		ST5850A, ST3780A and ST31220A.  Updated to include the
		PDIAG Slave jumper option.  Added ST5540A and
		ST51080A.

04/25/95	Fixed a spelling problem on Medalist family slave
		present jumpers.

04/05/95	Cleaned up ST5660N term power description and
		corrected BPI value. Corrected ST3610N ID# order.

02/01/95	Added shock specs to Hawk family drives

01/27/95	Corrected default term power reference asterisk
		on 1" Barracuda Differential models

01/24/95	Added ST5850A and ST9420AG. Corrected Term Power
		from SCSI bus setting on Hawk family drives. Fixed
		spelling error on Barracuda family wide models.  
		Corrected ST12450W J4 option block to show 8 pairs.


	1994 Changes

12/09/94	Updated Hawk and Barracuda families to show ASA level.

12/06/94	Updated ST3500N average sector per track value.

10/24/94	Updated ST31230W, ST32430W, ST31200W and ST410800N/W
 		Added ST3620W.

10/20/94	Corrected ST15230N avg SPT.

10/10/94	Added Marathon name to ST9385AG, ST9550AG, ST9655AG

08/31/94	Corrected ST5660A specs. Corrected ST15150N to
  		not show removable terminators (uses TE jumper).

 08/26/94	Added ST31230N and ST32430N. Updated ST12400W and
		ST15150N.

 08/17/94	Added ST3240A, ST3295A and ST3660A. Updated missing
		info on ST9385A, ST9550A, ST9655A, ST3780A and ST31220A.

 08/09/94	Added Medalist, Decathlon and Marathon names to
		appropriate models.  Added ST31220A and ST3780A 
		models.

 08/08/94	Corrected External Transfer Rate for ST410800W.
		Added Force 1024 Cyls jumper to ST5660A. Added
		External Transfer Rates to Hawk and Barracuda 
		drives. Corrected SPT avg for Barracuda 4 drives.

 08/01/94	Updated wide Barracuda models to show J4
		jumper MAY have 7 pairs.

 05/31/94	Added Parity Enable to ST43401N.  Updated
		ST5660N specs and jumpers.

 05/10/94	Corrected ST740A width.  Corrected Barracuda 
		Family Depth (mm).  Updated ST3390N average
		Sector per Track value.  Clarified ST3x91A 
		Family jumper drawing.

 05/02/94	Corrected access times on ST3x91 family drives.

 04/28/94	Added ST9385AG, ST9150AG, ST9240AG, ST9300AG,
		ST9655AG, ST15230N, ST15230W

 04/14/94	Corrected Height measurement on several 9xxxA 
		models.

 03/24/94	Corrected the ST410800N and W info.

 03/14/94	Corrected ST31200N family drives Parity Enable
		jumper reference (said Disable, sorry). Also
		clarified the same jumper on ST3610N family.

 02/27/94	Added ST3250A, ST3291A, ST3391A and ST3491A.
		Updated ST7050P. Pulled ST11201N and ST42101N 
		which were never mfg'd.

 02/15/94	Corrected pwa reference on Terminator Power view
		for Hawk family drives.

 02/11/94	Corrected specs that said "straight arm" actuator
		to "rotary voice coil".

 01/17/94	Reordered the J2 numbering on the ST11200 family
		to match the Installation Guides.


	1993 Changes

12/17/93	 Updated Baracuda differential models to show
		correct buffer size.

12/15/93	Added new products which where introduce at the
		Fall '93 Comdex. 34 new models (whew <g>)

12/14/93	Minor change to Elite drive family concerning
		termination power options on Differential models.

11/12/93	Corrected Quartdeck phone numbers.
		Reworked the Old to New Imprimis/Seagate model
		numbers chart

11/09/93	Corrected ST7050P specs. Added mating cable connector
		info to ST31200N

11/08/93	Added Cable Select jumper info to ST3655A, ST3550A
		and ST3390A

11/04/93	Corrected number of cylinders on ST3655N to
		conform to mode select page 3 sector/track
		value.

10/12/93	Added jumper drawings to ST11950W and ST12550W.
		Removed T-res object from ST11900N and ST12400N
		jumper drawings since these models use a T-RES
		enable/disable jumper.
		Corrected avg sector per track on ST11900N.
		Added ST11900NC drawing to show new 80 pin I/O
		connector.
		Corrected ST11200N family access times to not include
		controller overhead.
		Added ST1950N and ST11830N (ST11200N family drives).

10/11/93	Changed model numbers:ST11951N ->ST11950W,
		ST12551N ->ST12550W (new SCSI-wide designations will
		use W instead of ..1N). Also fixed average sectors
		per track on Baracuda drives.
		Corrected Delayed Motor Start time on ST11200 family.

10/05/93	Updates specs on ST31200N. Added note to Baracuda models
		about differential termination.

09/15/93	Corrected avg sectors per track on ST3390N

09/12/93	Corrected T-res info on ST4182N

08/17/93	Update specs and jumper setting for ST9235N.

08/12/93	Removed ST11700N, ST11701N, ST11750N, ST11751N and
		replaced with updated versions ST11900N, ST11901N,
		ST11950N and ST11951N.

08/11/93	Removed ST9295N (never produced).

07/27/93	Corrected "default" terminator power designations on
		ST3283N, ST3390N and ST3550N.

06/24/93	Correct SCSI pins 35,36,46 in PIN-CABL.HTX

06/23/93	Corrected Quarterdeck area codes, Storage Dimensions
		new phone number

06/22/93	Corrected ST9100AG power specs.
		Added ST3195A, ST9140AG, ST9190AG.

05/18/93	Corrected Ultrastor tech support area code

05/14/93	Added ST3390N.

05/13/93	Corrected ST1480N family t-res power from bus jumper.

05/12/93	Corrected ST9100AG total sectors and changed default
		translation geometry. Corrected ST3243A mtbf and power
		specs.
		Added ST9145AG, ST3123A, ST3145A, ST3290A, ST3390A,
		ST3655A.

03/10/93 	Clarified front-to-back orientation of configuration
		jumper block on ST3600A.
		Corrected ST3243A board layout.
		Corrected ST41601N external transfer rate.

02/09/93	Corrected ST3600A Master with Slave Present jumper

02/02/93	Added reference to old/new style SCSI ID jumper
		block on ST3600, ST3610 and ST11200 families.
		Correct cylinder and head specs on ST43400 Elite 3
		family. Pulled drawing in ST43402 and ST11201 (should
		show 68-pin wide scsi connector).

01/29/93	Added new PWA layout for ST3600A Family


	1992 Changes

12/18/92	Added all the NEW drives announced at COMDEX '92.

12/08/92	Updated ST3283N to show notch in I/O connector
		plastic shroud. Corrected MTBF and power specs.
		Corrected ST1980N internal transfer rate.

12/07/92	Added shock spec to ST9144 family.
		Updated left side view for ST3600N family to show
		early PCB layout for SCSI ID header.

12/01/92	Corrected Motor Start and Start Delay designations
		on ST3600N family.  They were described in reverse.

11/12/92	Corrected external transfer rate on ST41601N

11/11/92	Clarified location of configuration jumpers on ST2106E.
		Noted perpendicular configuration header on ST412 members
		of the ST157 family.

10/22/92	Added ST3600 family drives (ST3500 A & N, ST3600 A & N)

10/12/92	Corrected order of jumper numbers on ST11200 family
		(incl ST1980N) J2 jumper block.  Descriptions were OK,
		number wasn't. Also corrected ST11200N family data
		buffer amount.
		
09/28/92	ST3283 power specs and max full seek updated. Added
		pin-28 SPSYNC- info to front view of ST3283A.

09/08/92	Corrected perspective on ST3283 family front view.

07/16/92	Added T-res information to ST-2125N and ST-2209N (old
		94221 family Wren 5)

07/13/92	Corrected description of Motor Start and Start Delay
		jumpers on ST11200 family
		Identified pin-1 of J5 on ST1480N family

06/11/92	Corrected 3-pin power assignments on ST3144 family.
		Added ST-9052A.

05/18/92	Added ST-42400N.
		Correct spindle speeds on ST11200 family.

04/17/92	ST325N SCSI drive added.
		ST01/02 SCSI host adapter v3.3 board layout added.

Beginning of the revision history.