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	<title>U.3 - Revision history</title>
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	<updated>2026-04-28T15:27:03Z</updated>
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		<id>https://aznot.com/index.php?title=U.3&amp;diff=5557&amp;oldid=prev</id>
		<title>Kenneth at 20:24, 14 May 2020</title>
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		<updated>2020-05-14T20:24:17Z</updated>

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&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;https://en.wikipedia.org/wiki/NVM_Express#U.3_(SFF-8639)&lt;br /&gt;
&lt;br /&gt;
U.3 is built on the U.2 spec and uses the same SFF-8639 connector. It is a &amp;#039;tri-mode&amp;#039; standard, combining SAS, SATA and NVMe support into a single controller. U.3 can also support hot-swap between the different drives where firmware support is available.&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;Compatibility&amp;#039;&amp;#039;&amp;#039;: U.3 drives are still backward compatible with U.2, but U.2 drives are not compatible with U.3 hosts.&lt;br /&gt;
&lt;br /&gt;
See [[SFF-8639]]&lt;br /&gt;
&lt;br /&gt;
== keywords ==&lt;br /&gt;
&lt;br /&gt;
NVMe NVM Express PCIe&lt;br /&gt;
&lt;br /&gt;
[[Category:NVMe]]&lt;/div&gt;</summary>
		<author><name>Kenneth</name></author>
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