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<title>Conner Peripherals</title>

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</style><table class="infobox ib-company vcard"><caption class="infobox-title fn org" style="font-size: 125%;">Conner Peripherals, Inc.</caption><tbody><tr><td colspan="2" class="infobox-image ib-company-logo logo"></td></tr><tr><th scope="row" class="infobox-label">Company type</th><td class="infobox-data category">Private</td></tr><tr><th scope="row" class="infobox-label">Industry</th><td class="infobox-data category">Hard disk drives</td></tr><tr><th scope="row" class="infobox-label">Founded</th><td class="infobox-data">June 1985<span style="display:none"> (<span class="bday dtstart published updated">1985-06</span>)</span> in <a href="San_Jose%2C_California" title="San Jose, California">San Jose, California</a>, United States</td></tr><tr><th scope="row" class="infobox-label">Founder</th><td class="infobox-data agent"><a href="Finis_Conner" title="Finis Conner">Finis Conner</a></td></tr><tr><th scope="row" class="infobox-label">Defunct</th><td class="infobox-data">1996<span style="display: none;"> (<span class="dtend itvend">1996</span>)</span></td></tr><tr><th scope="row" class="infobox-label">Fate</th><td class="infobox-data">Acquired by <a href="Seagate_Technology" title="Seagate Technology">Seagate Technology</a></td></tr><tr><th scope="row" class="infobox-label">Headquarters</th><td class="infobox-data adr"><div class="ib-company-locality locality">San Jose, California</div>, <div class="ib-company-country country-name">United States</div></td></tr></tbody></table>

<p><b>Conner Peripherals, Inc.</b> (commonly referred to as <b>Conner</b>), was a company that manufactured <a href="Hard_drive" class="mw-redirect" title="Hard drive">hard drives</a> for <a href="Personal_computers" class="mw-redirect" title="Personal computers">personal computers</a>. Conner Peripherals was founded in 1985<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> by <a href="Seagate_Technology" title="Seagate Technology">Seagate Technology</a> co-founder and <a href="San_Jose_State_University" title="San Jose State University">San Jose State University</a> alumnus <a href="Finis_Conner" title="Finis Conner">Finis Conner</a> (1943– ).<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> In 1986, they merged<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> with <b>CoData</b>, a Colorado start-up founded by <a href="MiniScribe" title="MiniScribe">MiniScribe</a> founders <a href="Terry_Johnson_(entrepreneur)" title="Terry Johnson (entrepreneur)">Terry Johnson</a> and John Squires.<sup id="cite_ref-CoData_4-0" class="reference"><a href="#cite_note-CoData-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> CoData was developing a new type of small hard disk that put the capacity of a 5.25-inch drive into the smaller (and now commonplace) 3.5-inch format.<sup id="cite_ref-CoData_4-1" class="reference"><a href="#cite_note-CoData-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>

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<div class="mw-heading mw-heading2"><h2 id="Hard_disks">Hard disks</h2></div>

<div class="mw-heading mw-heading3"><h3 id="Design_concepts">Design concepts</h3></div>

<p>Conner's drives were notable for eschewing the "tub" type of head-disk assembly, where the disks are inside a large base casting shaped like a square <a href="Bowl_(vessel)" class="mw-redirect" title="Bowl (vessel)">bowl</a> or <a href="Vault_(architecture)" title="Vault (architecture)">vault</a> with a flat lid; instead, they preferred the flat base plate approach, which was more resistant to <a href="Shock_(mechanics)" title="Shock (mechanics)">shock</a> and less likely to warp or deform when heated.<sup id="cite_ref-usp5029026_5-0" class="reference"><a href="#cite_note-usp5029026-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Their first drives had the base plate carrying the disks, head arm and actuator enclosed inside a long aluminum cartridge, fixed to a bulkhead on the other side with two screws and sealed with a large, square <a href="O-ring" title="O-ring">O-ring</a>.<sup id="cite_ref-usp5029026_5-1" class="reference"><a href="#cite_note-usp5029026-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Conner's 1/3-height (1-inch thick) drives used a domed, cast aluminum lid with four screws, one on each corner, sealed to the base plate with a rubber gasket. The <a href="Printed_circuit_board" title="Printed circuit board">printed circuit board</a> was bolted to the bottom of the base plate, with the mounting holes for the drive drilled into tabs cast into the sides of the base plate.<sup id="cite_ref-usp4965684_6-0" class="reference"><a href="#cite_note-usp4965684-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> This design would be Conner's trademark look well into the 1990s.

</p><p>Logically, Conner's drives had some of the characteristics of the original <a href="MiniScribe" title="MiniScribe">MiniScribe</a> drives (of which John Squires had also been a designer), with a large amount of intelligence built into the drive's <a href="Central_processing_unit" title="Central processing unit">central processing unit</a> (CPU); Conner drives used a single <a href="Motorola_68HC11" title="Motorola 68HC11">Motorola 68HC11</a> <a href="Microcontroller" title="Microcontroller">microcontroller</a>, and ran a proprietary <a href="Real-time_operating_system" title="Real-time operating system">real-time operating system</a> that implemented the track-following algorithms (the <a href="Servomechanism" title="Servomechanism">"servo"</a> system) in software, as well as managing the bus interface.<sup id="cite_ref-usp4979056_7-0" class="reference"><a href="#cite_note-usp4979056-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>

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<div class="mw-heading mw-heading2"><h2 id="Corporate_history">Corporate history</h2></div>

<p>Conner Peripherals was founded in June 1985 and located in San Jose CA. However it did not produce any product until after it merged into and with CoData, <a href="Boulder%2C_Colorado" title="Boulder, Colorado">Boulder, Colorado</a>, in February 1986.<sup id="cite_ref-CPPros1988_8-0" class="reference"><a href="#cite_note-CPPros1988-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> It began shipping its first products based upon the CoData design in early 1987, initially to Compaq.<sup id="cite_ref-CPPros1988_8-1" class="reference"><a href="#cite_note-CPPros1988-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> During calendar 1987 Compaq represented about 90% of Conner Peripheral's sales.<sup id="cite_ref-CPPros1988_8-2" class="reference"><a href="#cite_note-CPPros1988-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>

</p><p>In 1990, Conner Peripherals set a record by reaching $1.337 billion in sales in four years, without acquisitions, making it the fastest-growing manufacturing start-up in United States history.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>

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<div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2></div>

<ul><li>Pollack, Andrew. <a rel="nofollow" class="external text" href="https://www.nytimes.com/1990/05/27/business/a-novel-idea-customer-satisfaction.html">A Novel Idea: Customer Satisfaction</a>, <i><a href="The_New_York_Times" title="The New York Times">The New York Times</a></i>, 27 May 1990, page F1.</li></ul>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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<li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text">Riser, J., "Computer Memories Names New CEO," Electronic News, September 23, 1985, p. 21.</span>

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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">Finis F. Conner, born 28 July 1943 in Gadsden, Alabama</span>

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<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">Computer System News and Electronic News, Feb 1986</span>

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</style><cite id="CITEREFJohnson2016" class="citation web cs1">Johnson, Terry (2016-08-25) [2016-08-24]. Porter, Jim (ed.). <a rel="nofollow" class="external text" href="http://archive.computerhistory.org/resources/text/Oral_History/Johnson_Terry/Johnson_Terry.oral_history.2006.102657961.pdf">"Oral History Of Terry Johnson"</a> <span class="cs1-format">(PDF)</span>. Mountain View, California, USA: <a href="Computer_History_Museum" title="Computer History Museum">Computer History Museum</a>. X3703.2007. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170402183700/http://archive.computerhistory.org/resources/text/Oral_History/Johnson_Terry/Johnson_Terry.oral_history.2006.102657961.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2017-04-02<span class="reference-accessdate">. Retrieved <span class="nowrap">2017-04-02</span></span>.</cite></span>

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</style><span class="citation patent"><a rel="nofollow" class="external text" href="https://worldwide.espacenet.com/textdoc?DB=EPODOC&IDX=US5029026">US patent 5029026</a>, "Disk drive architecture", issued 1991-07-02, assigned to Conner Peripherals, Inc.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.number=5029026&rft.cc=US&rft.title=Disk+drive+architecture&rft.assignee=Conner+Peripherals%2C+Inc.&rft.date=1991-07-02&rft.appldate=1989-08-08"><span style="display: none;"> </span></span></span>

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<span class="citation patent"><a rel="nofollow" class="external text" href="https://worldwide.espacenet.com/textdoc?DB=EPODOC&IDX=US4965684">US patent 4965684</a>, "Low height disk drive", issued 1990-10-23, assigned to Conner Peripherals, Inc.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.number=4965684&rft.cc=US&rft.title=Low+height+disk+drive&rft.assignee=Conner+Peripherals%2C+Inc.&rft.date=1990-10-23&rft.appldate=1988-01-25"><span style="display: none;"> </span></span></span>

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<span class="citation patent"><a rel="nofollow" class="external text" href="https://worldwide.espacenet.com/textdoc?DB=EPODOC&IDX=US4979056">US patent 4979056</a>, "Disk drive system controller architecture", issued 1990-12-18, assigned to Conner Peripherals, Inc.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.number=4979056&rft.cc=US&rft.title=Disk+drive+system+controller+architecture&rft.assignee=Conner+Peripherals%2C+Inc.&rft.date=1990-12-18&rft.appldate=1987-06-02"><span style="display: none;"> </span></span></span>

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<li id="cite_note-CPPros1988-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-CPPros1988_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-CPPros1988_8-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-CPPros1988_8-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text">Conner Peripherals Prospectus, April 12, 1988</span>

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<li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text">Langan, Patricia A., <i>America's Fastest Growing Company,</i> Fortune, August 13, 1990</span>

</li>

</ol></div></div>

<div class="mw-heading mw-heading2"><h2 id="Bibliography">Bibliography</h2></div>

<ul><li><i>International Directory of Company Histories, Vol. 6</i>; St. James Press; 1992.</li></ul>

<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><a rel="nofollow" class="external text" href="http://www.fundinguniverse.com/company-histories/conner-peripherals-inc-history/">Fundinguniverse.com: History of Conner Peripherals, Inc.</a></li></ul>

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</style><div id="Hard_disk_drive_manufacturers194" style="font-size:114%;margin:0 4em"><a href="Hard_disk_drive" title="Hard disk drive">Hard disk drive</a> manufacturers</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div>

<ul><li><a href="History_of_hard_disk_drives" title="History of hard disk drives">History of hard disk drives</a>

<ul><li><a href="History_of_IBM_magnetic_disk_drives" title="History of IBM magnetic disk drives">IBM magnetic disk drives</a></li></ul></li>

<li><a href="List_of_defunct_hard_disk_manufacturers" title="List of defunct hard disk manufacturers">List of defunct hard disk manufacturers</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:left">Current</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0;text-align:left"><div style="padding:0 0.25em">

<ul><li><a href="Seagate_Technology" title="Seagate Technology">Seagate Technology</a></li>

<li><a href="Toshiba" title="Toshiba">Toshiba</a></li>

<li><a href="Western_Digital" title="Western Digital">Western Digital</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:left">Defunct</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0;text-align:left"><div style="padding:0 0.25em">

<li><a href="Alps_Electric" class="mw-redirect" title="Alps Electric">Alps Electric</a></li>

<li><a href="Ampex" title="Ampex">Ampex</a></li>

<li><a href="Anelex" title="Anelex">Anelex</a></li>

<li><a href="Areal_Technology" title="Areal Technology">Areal Technology</a></li>

<li><a href="Atasi_Corporation" title="Atasi Corporation">Atasi</a></li>

<li><a href="Avatar_Systems" title="Avatar Systems">Avatar Systems</a></li>

<li><a href="Bryant_Grinder" title="Bryant Grinder">Bryant Computer Products</a></li>

<li><a href="Burroughs_Corporation" title="Burroughs Corporation">Burroughs</a></li>

<li><a href="Castlewood_Orb_Drive" class="mw-redirect" title="Castlewood Orb Drive">Castlewood Systems</a></li>

<li><a href="Calcomp" title="Calcomp">Calcomp</a></li>

<li><a href="Caelus_Memories" title="Caelus Memories">Caelus Memories</a></li>

<li><a href="Groupe_Bull" title="Groupe Bull">CII-Honeywell-Bull</a></li>

<li><a href="Computer_Memories%2C_Inc." title="Computer Memories, Inc.">Computer Memories, Inc.</a></li>

<li><a href="Cornice_Inc." class="mw-redirect" title="Cornice Inc.">Cornice</a></li>

<li><a href="Data_General" title="Data General">Data General</a></li>

<li><a href="Datapoint" title="Datapoint">Datapoint</a></li>

<li><a href="Dataproducts" title="Dataproducts">Dataproducts</a></li>

<li><a href="Diablo_Data_Systems" title="Diablo Data Systems">Diablo Systems</a></li>

<li><a href="Digital_Equipment_Corporation" title="Digital Equipment Corporation">Digital Equipment Corporation</a></li>

<li><a href="Emulex" title="Emulex">Emulex</a></li>

<li><a href="Epson" title="Epson">Epson</a></li>

<li><a href="ExcelStor_Technology" title="ExcelStor Technology">ExcelStor Technology</a></li>

<li><a href="Fuji_Electric" title="Fuji Electric">Fuji Electric</a></li>

<li><a href="Fujitsu" title="Fujitsu">Fujitsu</a></li>

<li><a href="General_Electric" title="General Electric">General Electric</a></li>

<li><a href="GS_Magicstor" class="mw-redirect" title="GS Magicstor">GS Magicstor</a></li>

<li><a href="Hewlett-Packard" title="Hewlett-Packard">Hewlett-Packard</a></li>

<li><a href="Hitachi" title="Hitachi">Hitachi</a></li>

<li><a href="Hokushin_Electric_Works" class="mw-redirect" title="Hokushin Electric Works">Hokushin Electric Works</a></li>

<li><a href="Hyosung" title="Hyosung">Hyosung</a></li>

<ul><li><a href="AdStar" title="AdStar">AdStar</a></li></ul></li>

<li><a href="Magnetic_Peripherals" class="mw-redirect" title="Magnetic Peripherals">Imprimis (CDC)</a></li>

<li><a href="Int%C3%A9gral_Peripherals" title="Intégral Peripherals">Intégral Peripherals</a></li>

<li><a href="Iomega" title="Iomega">Iomega</a></li>

<li><a href="JT_Storage" title="JT Storage">JT Storage</a></li>

<li><a href="Kalok" title="Kalok">Kalok</a></li>

<li><a href="Kennedy_Company" title="Kennedy Company">Kennedy</a></li>

<li><a href="Kyocera" title="Kyocera">Kyocera</a></li>

<li><a href="Librascope" title="Librascope">Librascope</a></li>

<li><a href="Maxtor" title="Maxtor">Maxtor</a></li>

<li><a href="Memorex" title="Memorex">Memorex</a></li>

<li><a href="Micropolis_Corporation" title="Micropolis Corporation">Micropolis</a></li>

<li><a href="MiniScribe" title="MiniScribe">MiniScribe</a></li>

<li><a href="MiniStor" title="MiniStor">MiniStor Peripherals</a></li>

<li><a href="Mitsubishi" title="Mitsubishi">Mitsubishi</a></li>

<li><a href="Mitsumi_Electric" title="Mitsumi Electric">Mitsumi Electric</a></li>

<li><a href="KDK" title="KDK">Nippon Electric Industry</a></li>

<li><a href="Noma%C3%AF" title="Nomaï">Nomaï</a></li>

<li><a href="Ohio_Scientific" title="Ohio Scientific">Ohio Scientific</a></li>

<li><a href="Oki_Electric_Industry" title="Oki Electric Industry">Okidata</a></li>

<li><a href="Olivetti" title="Olivetti">Olivetti OPE</a></li>

<li><a href="Panasonic" title="Panasonic">Panasonic</a></li>

<li><a href="Pertec_Computer" class="mw-redirect" title="Pertec Computer">Pertec Computer</a></li>

<li><a href="Philips" title="Philips">Philips</a></li>

<li><a href="Plus_Development" title="Plus Development">Plus Development</a></li>

<li><a href="Potter_Instrument" title="Potter Instrument">Potter Instrument</a></li>

<li><a href="PrairieTek" title="PrairieTek">PrairieTek</a></li>

<li><a href="Priam_Corporation" title="Priam Corporation">Priam</a></li>

<li><a href="Quantum_Corporation" title="Quantum Corporation">Quantum</a></li>

<li><a href="Ricoh" title="Ricoh">Ricoh</a></li>

<li><a href="Rodime" title="Rodime">Rodime</a></li>

<li><a href="SAGEM" title="SAGEM">SAGEM</a></li>

<li><a href="Samsung_Electronics" title="Samsung Electronics">Samsung Electronics</a></li>

<li><a href="Sequel_Inc." class="mw-redirect" title="Sequel Inc.">Sequel</a></li>

<li><a href="Shugart_Associates" title="Shugart Associates">Shugart Associates</a></li>

<li><a href="Siemens" title="Siemens">Siemens</a></li>

<li><a href="StorageTek" title="StorageTek">StorageTek</a></li>

<li><a href="SyQuest_Technology" title="SyQuest Technology">SyQuest Technology</a></li>

<li><a href="Tandon_Corporation" title="Tandon Corporation">Tandon</a></li>

<li><a href="Texas_Instruments" title="Texas Instruments">Texas Instruments</a></li>

<li><a href="Tokico" title="Tokico">Tokico</a></li>

<li><a href="Xebec_Corporation" title="Xebec Corporation">Xebec</a></li>

</div></td></tr></tbody></table></div></div><div><div class="zim-footer">

This article is issued from <a class="external text" title="Last edited on 2025-07-25" href="https://en.wikipedia.org/wiki/?title=Conner_Peripherals&oldid=1302435771">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.

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