<b>The goldilock backplane</b><br>Trayless Dual Channel SATA / SAS HDD Backplane (4x)<br><br><b>Good in the middle</b><br>This backplane solution provides storage place for four 3.5" SATA/SAS HDDs and there for is the middle brother in the family between IB-543 and IB-545 which provide five or three HDD backplane solution.<br><br><b>For safety</b><br>To that, we add to the delivery a key for the IB-544SSK. The HDD installation is trayless: simply push the HDD in, close the latch and done.<br><br><b>Cooler holds longer</b><br>In order that the HDDs and their new home will not get too hot, the robust high quality aluminium enclosure dissipate the heat from the inside of the enclosure to the outside. Still, a 70 mm fan is there for support.

The four LED indicators provide information regarding HDD access (read/write) as well as fan insformation. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-483-6306, indicating validated use in U.S. government and defense logistics supply chains.