
Samsung PM991 MZVLQ1T0HALB - SSD - 1 TB - internal - M.2 - PCIe 3.0 x4 (NVMe)
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The Samsung PM991 (MZVLQ1T0HALB) is a 1TB M.2 2280 solid-state drive using the PCIe 3.0 x4 NVMe interface. It is an OEM part, the kind Samsung supplies to laptop and prebuilt PC makers, rather than a retail drive sold in a box with software and a warranty card. It suits upgrading a compatible M.2 slot or replacing a drive in a machine that came with one. Against retail drives like the Samsung 970 EVO, it trades peak speed and bundled support for a low-power, compact design built for mainstream laptops.
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Owners treat the PM991 as a reliable OEM drive that came in their laptop or was bought as a replacement. They report quick boots and everyday responsiveness, and note it is not a high-end drive for sustained heavy writes.
The Samsung PM991 is a 1 TB internal solid-state drive for PCs. It uses the M.2 form factor, which keeps the drive compact.
It connects over PCIe 3.0 x4 using the NVMe protocol for fast data processing.







