Industrial M.2 2242 & 2280 NVMe SSD Write Protect
Write Protect Feature Connector
The Industrial M.2 2242 & 2280 NVMe SSD contains a feature connector for Write Protect mode. Write Protect mode is enabled when the Write Protect feature connector is placed at 1.27mm pitch Pin Header after power up or any time. During Write Protect mode, the SSD is read-only and data can’t be written to it. If no feature connector is placed, data can be written as usual.
Dummy Write
Normally, the Host forwards a write command to the device, but during Write Protect mode, the controller will write the data in the cache buffer, which means the user can access the data at this moment. However, once the device is turned off, all of the data in the cache buffer will disappear. The advantage of a dummy write is that the write command will be completed without an error report and the contents of the data in the NAND Flash will not be changed. However, some operating systems may encounter an error if data inconsistency is detected because of the dummy write. Users who use this function should understand their system constraints well.
Feature Connector Pin Definition
M.2 2242 & 2280 NVMe SSD Write Protect Feature Connector Setting
Industrial 2.5”/M.2/mSATA Write Protect
Application Note
Application Note
Write Protect Feature Connector
The Industrial 2.5” SSD contains a feature connector for Write Protect mode.
This 2.5” SSD utilizes a Write-Bypassing feature for write protection. A dummy write is used to complete the write commands without
an error report and maintain the contents of the data. However, some operating systems may encounter an error if data inconsistency
is detected because of the dummy write. Users who use this function should understand their system constraints well and manage
this function carefully to avoid potential problems.
This 2.5” SSD utilizes a Write-Bypassing feature for write protection. A dummy write is used to complete the write commands without
an error report and maintain the contents of the data. However, some operating systems may encounter an error if data inconsistency
is detected because of the dummy write. Users who use this function should understand their system constraints well and manage
this function carefully to avoid potential problems.
Dummy Write
Normally, the Host forwards a write command to the device, but during Write Protect mode, the controller will write the data in the
cache buffer, which means the user can access the data at this moment. However, once the device is turned off, all of the data in the
cache buffer will disappear.
The advantage of a dummy write is that the write command will be completed without an error report and the contents of the data in
the NAND Flash will not be changed. However, some operating systems may encounter an error if data inconsistency is detected
because of the dummy write. Users who use this function should understand their system constraints well.
cache buffer, which means the user can access the data at this moment. However, once the device is turned off, all of the data in the
cache buffer will disappear.
The advantage of a dummy write is that the write command will be completed without an error report and the contents of the data in
the NAND Flash will not be changed. However, some operating systems may encounter an error if data inconsistency is detected
because of the dummy write. Users who use this function should understand their system constraints well.
Feature Connector Pin Definition
2.5” SSD Write Protect Feature Connector Setting
Write Protect Feature Connector
The Industrial M.2/mSATA SSD contains a feature connector for Write Protect mode.
The feature connector is used to set the device as a write protection device when it is placed at 1.27mm pitch Pin Header after power
up or any time. During Write Protect mode, the SSD is read-only and data can’t be written to it. If no feature connector is placed, data
can be written as usual.
This M.2/mSATA SSD utilizes a Write-Bypassing feature for write protection. A dummy write is used to complete the write commands
without an error report and maintain the contents of the data. However, some operating systems may encounter an error if data
inconsistency is detected because of the dummy write. Users who use this function should understand their system constraints well
and manage this function carefully to avoid potential problems.
The feature connector is used to set the device as a write protection device when it is placed at 1.27mm pitch Pin Header after power
up or any time. During Write Protect mode, the SSD is read-only and data can’t be written to it. If no feature connector is placed, data
can be written as usual.
This M.2/mSATA SSD utilizes a Write-Bypassing feature for write protection. A dummy write is used to complete the write commands
without an error report and maintain the contents of the data. However, some operating systems may encounter an error if data
inconsistency is detected because of the dummy write. Users who use this function should understand their system constraints well
and manage this function carefully to avoid potential problems.
Dummy Write
Normally, the Host forwards a write command to the device, but during Write Protect mode, the controller will write the data in the
cache buffer, which means the user can access the data at this moment. However, once the device is turned off, all of the data in the
cache buffer will disappear.
The advantage of a dummy write is that the write command will be completed without an error report and the contents of the data in
the NAND Flash will not be changed. However, some operating systems may encounter an error if data inconsistency is detected
because of the dummy write. Users who use this function should understand their system constraints well.
cache buffer, which means the user can access the data at this moment. However, once the device is turned off, all of the data in the
cache buffer will disappear.
The advantage of a dummy write is that the write command will be completed without an error report and the contents of the data in
the NAND Flash will not be changed. However, some operating systems may encounter an error if data inconsistency is detected
because of the dummy write. Users who use this function should understand their system constraints well.
Feature Connector Pin Definition
