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Green rectangular mSATA SSD with gold edge connector and black label, 51 by 30 by 3.85 mm, up to 10 g

SAMSUNG

SAMSUNG MZ-M256D PM851 256GB mSATA laptop hard drive

SKU CH-0BG2-2E6F5 MPN MZ-M256D

A 256 GB mSATA solid-state drive with SATA interface and AES-256 encryption

  • 256 GB capacity stores large workloads
  • AES-256 encryption protects sensitive data
  • SATA 6 Gbps interface enables fast transfers
  • mSATA form factor fits slim laptops
  • 10 g weight keeps system light

Samsung PM851 256GB mSATA SSD

This Samsung PM851 solid-state drive provides 256GB of storage in an mSATA form factor. It is designed for laptops or small-form-factor systems that accept a mini PCIe slot with SATA signalling. The drive uses AES-256 hardware encryption to protect stored data. It suits users upgrading older portable devices or embedded platforms.

Sustained workload behaviour

The SATA 6Gbps interface sets the maximum throughput ceiling for long transfers. Sequential performance will settle at the link limit once the controller cache is filled during extended writes. Thermal output remains low thanks to the minimal 3.85mm thickness and light weight. The controller manages wear levelling and garbage collection continuously in background.

Practical limits of the SATA interface

The mSATA connector carries SATA signals, so the drive cannot exceed the 6Gbps electrical specification. Systems limited to SATA 3Gbps will restrict the SSD to half the potential bandwidth. Boot support depends on the host BIOS recognising mSATA as a primary device. Physical dimensions of 51mm by 30mm must match the slot clearance exactly.

Highlights

  • 256 GB capacity stores large workloads
  • AES-256 encryption protects sensitive data
  • SATA 6 Gbps interface enables fast transfers
  • mSATA form factor fits slim laptops
  • 10 g weight keeps system light

Specifications

No published specifications for this item yet.

Questions about this item

Does the PM851 mSATA drive produce any fan noise or heat that would need extra cooling in a laptop?

The solid-state design has no moving parts, so it runs silently and generates minimal heat; the 3.85 mm height leaves room for normal airflow in the slot.

My laptop has an mSATA slot — do I need any adapter, bracket or cable to install this PM851 drive?

The module plugs directly into a standard mSATA connector; no adapter, bracket or cable is required.

Will this PM851 mSATA SSD work in an older laptop that only supports SATA 3 Gbps?

The SATA interface is backward compatible, so the drive will operate at the speed the older laptop allows.

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