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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
The Lenovo 7XH7A05908 is a 4-bay 2.5-inch drive backplane kit designed to expand or restore hot-swap storage capacity in ThinkSystem ST550 tower servers. If you're adding drives to an ST550 that shipped without a fully populated backplane configuration, or replacing a failed backplane assembly, this kit provides the direct-attach SAS and SATA connectivity needed to bring those drive bays online. At 2.89 lb and 8.00 x 9.00 x 6.50 in, the assembly is sized to fit the ST550 chassis without modification — no adapter plates, no improvised brackets.
This backplane kit is designed specifically for the Lenovo ThinkSystem ST550 tower server platform. It supports both SAS and SATA drive interfaces, meaning you can populate the four bays with SAS HDDs, SATA HDDs, or SATA SSDs — giving you flexibility to mix drive types depending on the storage controller installed in the ST550. Verify your ST550's RAID or HBA controller supports the drive protocol you intend to use before ordering; the backplane itself is dual-interface, but the controller determines what's actually addressable. This kit is not compatible with other ThinkSystem tower or rack models — consult the server components catalog for backplane options on ST250, ST558, or SR-series rack units.
Installation requires partial disassembly of the ST550 chassis to seat and cable the backplane. Ensure the server is powered down and de-energized before beginning. SAS/SATA signal cables and power connectors must be routed from the installed storage controller and server backplane to this assembly — confirm cable lengths and connector types match your ST550's internal routing before the install. Country of origin is Mexico; the unit ships factory-new as a genuine Lenovo component.
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Specific I/O ports panel designed to integrate 2.5-inch drives within the ThinkSystem ST550 server chassis
N 8-bay, 2.5-inch Anybay backplane kit designed for the ThinkSystem ST550 tower server
2.5-inch 2x2 bay backplane kit designed to expand or replace drive connectivity in compatible ThinkSystem servers
Factory-new 8-bay 2.5-inch backplane kit for Lenovo ThinkSystem SR530 and SR630 rack servers
N 8-bay SAS/SATA backplane kit designed to expand storage connectivity within specific Lenovo ThinkSystem servers
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