M2 1TB 2280MM SSD
NGFF” redirects here. For the Next Generation Small Form Factor (aka NF1/M.3), see NGSFF. For the Enterprise and Data Center Standard Form Factor.
M.2, pronounced m dot two and formerly known as the Next Generation Form Factor (NGFF), is a specification for internally mounted computer expansion cards and associated connectors. M.2 2280 SSD replaces the Mini SATA (mSATA) standard and the Mini PCIe (mPCIe) standard (Which is how it got the short name of M dot 2 from being Mini SATA 2). Employing a more flexible physical specification, allowing different module widths and lengths, which, paired with the availability of more advanced interfacing features, makes particularly in smaller devices such as ultrabooks and tablets.
Features
A high-level overview of the SATA Express software architecture. It supports both legacy SATA and PCI Express storage devices, with AHCI and NVMe as the logical device interfaces.
The modules can integrate multiple functions, including the following device classes: Wi-Fi, Bluetooth, satellite navigation, near field communication (NFC), digital radio, WiGig, wireless WAN (WWAN), and solid-state drives (SSDs). The SATA revision 3.2 specification, in its gold revision as of August 2013, standardizes M.2 2280 SSD as a new format for storage devices and specifies its hardware layout. Buses exposed through the connector include PCI Express (PCIe) 3.0 and newer, Serial ATA (SATA) 3.0 and USB 3.0; all these standards are backward compatible.
Storage interfaces
Three options are available for the logical device interfaces and command sets used for interfacing with storage devices, which may be used depending on the type of M.2 2280 SSD storage device and available operating system support:
Legacy SATA
Used for SATA SSDs, and interfaced through the AHCI driver and legacy SATA 3.0 (6 Gbit/s) port exposed through the M.2 2280 SSD connector.
PCI Express using NVMe
Used for PCI Express SSDs and interfaced through the NVMe driver and provided PCI Express lanes, as a high-performance and scalable host controller interface designed and optimized especially for interfacing with PCI Express SSDs. NVMe has been designed from the ground up, capitalizing on the low latency and enhanced parallelism of PCI Express SSDs, and complementing the parallelism of contemporary CPUs, platforms and applications. At a high level, primary advantages of NVMe over AHCI relate to NVMe’s ability to exploit parallelism in host hardware and software, based on its design advantages that include data transfers with fewer stages, greater depth of command queues, and more efficient interrupt processing.
Form factors and keying
The M.2 2280 SSD standard is based on the mSATA standard, which uses the existing PCI Express Mini Card (Mini PCIe) form factor and connector. SSD adds the possibility of larger printed circuit boards (PCBs), allowing longer modules and double-sided component population.
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