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Today we are going to learn about solid state drives of laptops

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Solid state drive is abbreviated as SSD

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It is a hard disk made of an array of solid-state electronic memory chips

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Solid state drives in laptops can be divided into four types by interfaces

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The first is SATA interface hard drives, inserted in the mainboard SATA interface

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The second type is the hard disk with the M.2 interface

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The third type is the mSATA interface hard disk

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There are also onboard solid state drives that soldered directly to the mainboard

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This SATA interface solid state disk, its appearance is very similar with the hard disk drive

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They are inserted in the mainboard SATA interface above,

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through the SATA bus communication

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The data is stored on the chip, and if the chip is damaged,

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the data will be lost in a devastating way

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We call these memory chips flash memory chips

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The master chip is responsible for managing these flash memory chips

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Ok, let's take a look at the mSATA interface SSD

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The mSATA interface has the same appearance as the MINI PCIE slot

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However, MINI PCIE slots are distributed on the PCIE bus,

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while mSATA ports use the SATA bus

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This is a solid state drive with mSATA interface

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Let's take a look at the M.2 interface SSD

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M.2 Interfaces are of two types:

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one is distributed with a SATA bus and the other is distributed with a PCIE bus

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The NVME protocol uses the PCIE bus for communication

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SATA bus communication is the SATA protocol

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In terms of speeds, the NVME protocol is much faster than the SATA bus

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As can be seen from the interface type,

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the one with two error prevention interfaces is SATA,

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and the one with only one error prevention interface is NVME

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There is also a mainboard similar to this Apple,

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it is directly welded to the hard disk chip on the mainboard,

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this chip is not easy to replace

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Ok, this is the introduction of the solid state drives