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U.2 (pronounced 'u-dot-2' [ 1] ), using the port SFF-8639, is a computer interface standard for connecting solid-state drives (SSDs) to a computer. It covers the physical connector, electrical characteristics, and communication protocols. It was developed for the enterprise market and designed to be used with new PCI Express drives along with ...
The initial NVM stands for non-volatile memory, which is often NAND flash memory that comes in several physical form factors, including solid-state drives (SSDs), PCIe add-in cards, and M.2 cards, the successor to mSATA cards. NVM Express, as a logical-device interface, has been designed to capitalize on the low latency and internal parallelism ...
PCIe 3.0 x4 NVMe 1.0 2.5" with U.2 connector/AIC with PCIe x4 connector 1100/500-1600/1400 130/17-365/22 March 2016 Endurance: 0.3 DWPD/350 TB to 1490 TB, Power Active Average: 12W to 20W [74] DC P3520 Pleasantdale 450/1200/2000 3D1 MLC PCIe 3.0 x4 NVMe 1.0 2.5" with U.2 connector/AIC with PCIe x4 connector Intel CH29AE41AB1 [75] 1200/600 1700/1350
The standard is meant to replace the U.2 form factors for drives used in data centers. [ 1] EDSFF provides a pure NVMe over PCIe interface. One common way to provide EDSFF connections on the motherboard is through MCIO connectors. EDSFF SSDs are made in six sizes: E1.L (Long) and E1.S (Short), E2.L and E2.S, and E3.L and E3.S. [ 2]
M.2, pronounced m dot two[ 1] and formerly known as the Next Generation Form Factor ( NGFF ), is a specification for internally mounted computer expansion cards and associated connectors. M.2 replaces the Mini SATA ( mSATA) standard and the Mini PCIe ( mPCIe) standard.
As of March 2015, some NVM Express devices in form of 2.5-inch drives use the U.2 connector (originally known as SFF-8639, with the renaming taking place in June 2015 [33]), [35] [36] which is expected to gain broader acceptance. The U.2 connector is mechanically identical to the SATA Express device plug, but provides four PCI Express lanes ...
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