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Green rectangular mSATA SSD circuit board with black chips and gold edge connector

SAMSUNG

SAMSUNG MZ-M512D PM851 512 GB mSATA laptop hard drive

SKU CH-P9X9-SSFW5 MPN MZ-M512D

A 512 GB mSATA solid-state drive with SATA interface, AES-256 encryption, up to 540 MB/s sequential read, 380 MB/s write, 100,000 IOPS random read and write, and 1.5 million hour MTBF

  • 512 GB capacity stores large media libraries
  • Sequential read up to 540 MB/s accelerates boot times
  • AES-256 encryption protects sensitive data without software overhead
  • 5 million hour MTBF indicates long-term reliability
  • mSATA form factor fits slim ultrabook slots

Capacity and form factor

The Samsung PM851 MZ-M512D is a 512 GB solid-state drive built in the mSATA form factor. It suits laptops or embedded systems that accept a full-size Mini PCIe module with SATA signalling. Buyers upgrading older ultrabooks or industrial boards will find the capacity and interface match legacy expansion slots.

Compatibility checks

Verify the host slot is a genuine mSATA connector and not a PCIe-only Mini PCIe socket, as the drive uses the SATA 6 Gbps interface. Confirm the system BIOS recognises SATA solid-state drives of this capacity and that AES-256 encryption support is not required for boot. Physical space of 51 by 30 by 3.85 mm must be available inside the chassis.

Sustained workload behaviour

Sequential writes reach up to 380 MB/s and random writes up to 100,000 IOPS, figures that hold during extended write sessions rather than only in short bursts. The drive carries an MTBF of 1,500,000 hours, indicating endurance for continuous operation in always-on environments. Thermal output remains low given the maximum weight of 10 g and compact dimensions.

How it compares

Measured against everything we stock in 2.5-Inch Internal Laptop HDDs, at today’s prices. Recalculated every night.

Price $144.99
Pricier than about 77% of the 645 comparable items (median $66.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Does the mSATA PM851 512 GB drive come with mounting hardware or cloning software?

The drive is supplied in retail or OEM packing that may vary; no bracket, screws or software are guaranteed in the box.

Should I choose the MZ-M512D or the MZMTE512HMHP-000D1 part number for my laptop?

Both numbers refer to the same PM851 512 GB mSATA module; order whichever SKU your supplier lists.

Will the advertised 540 MB/s sequential read speed be reached in a typical SATA-6Gbps laptop slot?

Yes, the 540 MB/s sequential read and 380 MB/s write ratings are measured on a SATA-6Gbps host, so a compatible laptop slot can deliver those speeds.

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