My computer is only recognizing one of the hard drives while using eSATA. What do I do? - StarTech.com IT Pro Community
<main> <article class="userContent"> <p>SATA hard drive controllers require a feature called port multiplier to read more than one hard drive per SATA or eSATA port. The port multiplier feature is not standard on many SATA hard drive controllers.</p><p>If your computer is only recognizing one of your hard drives, you need to plug the eSATA cable into a SATA controller that includes the port multiplier feature. If none of your current hard drive controllers include this feature, you can add a hard drive controller that does support port multiplier in any available expansion slot (for example, PCI, PCI-Express, PCMCIA, CardBus, or ExpressCard). StarTech.com has hard drive controllers available that support the port multiplier feature. To view the hard drive controllers, click here: <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=http%3A%2F%2Fstartech.com%2FCards-Adapters%2FHDD-Controllers%2FSATA-Cards%2F%3Ffilter_PORTMULTIPLIER%3DYes" rel="nofollow noreferrer ugc">http://startech.com/Cards-Adapters/HDD-Controllers/SATA-Cards/?filter_PORTMULTIPLIER=Yes</a>.</p><p>If you have a hard drive controller card that does support the port multiplier feature but it is only reading one hard drive at a time, update the drivers of the hard drive controller. To find the most current StarTech.com drivers, click here: <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=http%3A%2F%2Fwww.startech.com%2FSupport" rel="nofollow noreferrer ugc">http://www.startech.com/Support</a>.</p><p><br></p><p><br></p><div class="blockquote"><div class="blockquote-content"><p class="blockquote-line">This FAQ applies to these products: <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fs3520bu33er" rel="nofollow noreferrer ugc">S3520BU33ER</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fs3520wu33er" rel="nofollow noreferrer ugc">S3520WU33ER</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fs352bu33rer" rel="nofollow noreferrer ugc">S352BU33RER</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fs3540bu33e" rel="nofollow noreferrer ugc">S3540BU33E</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fs355bu33erm" rel="nofollow noreferrer ugc">S355BU33ERM</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fs358bu33erm" rel="nofollow noreferrer ugc">S358BU33ERM</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fsat3540u3er" rel="nofollow noreferrer ugc">SAT3540U3ER</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fsatdock22re" rel="nofollow noreferrer ugc">SATDOCK22RE</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fsatdock4u3e" rel="nofollow noreferrer ugc">SATDOCK4U3E</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fsatdupue" rel="nofollow noreferrer ugc">SATDUPUE</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fsdock1eu3p2" rel="nofollow noreferrer ugc">SDOCK1EU3P2</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fsdock2u33eb" rel="nofollow noreferrer ugc">SDOCK2U33EB</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fsdock2u33re" rel="nofollow noreferrer ugc">SDOCK2U33RE</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fhdd%2Fsu2dupera11" rel="nofollow noreferrer ugc">SU2DUPERA11</a></p></div></div> </article> </main>
