AR-M351N, AR-M451N (serv.man50). ARM451U N Sales Brochure - Sharp Copying Equipment Brochure (repair manual). Page 10

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Prevents data leak
The data generated for each 
job is automatically encrypted 
and erased once that job is 
finished 
Copy Data
Print Data
Scan Data
Fax Data
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TOP SECRET
Data Encryption
Data Erase
NO!
Windows®
Ethernet
(10Base-T/100Base-TX)
Macintosh
Unknown IP or MAC 
addresses will be 
denied access
SHARP’S LAYERED 
SECURITY
 APPROACH
In today’s competitive business world, information is your greatest advantage. But what can you do 
to protect it? The AR-M451U/N has multiple security features to prevent unauthorised access and 
secure your data. Providing a choice of output methods (print hold/confidential print) to keep 
sensitive information private as well as the ability to completely erase data, the AR-M451U/N brings 
you peace of mind. 
Data Security Kit*
1
– encrypts and removes any data on the hard disk safely and
completely after use
Secure Network Card*
2
– provides network port and protocol management, as well as a
firewall that prevents direct connection and access by unauthorised users
Confidential data storage and printing – protects sensitive information by requiring the
user to enter a PIN code before the documents are produced
Secure data storage for Document Filing – all data that goes through the hard disk is
encrypted, while PIN codes used in the Advanced Filing function ensure solid security
Auditing mode – keep track of and control the amount of use by employee or department
User authentication – requires the user to log into the machine before performing any
network scanning operations
*1: AR-FR21U required for AR-M451N and AR-FR22U for AR-M451U.
*2: AR-NC7 or AR-NC8 required for AR-M451U.
Data Security Kit
Digital copier/printers or multifunction products can retain hundreds of pages of confidential 
information from previous jobs on their hard disks or internal memory. To prevent these sensitive 
records from being recovered by unauthorised persons, the AR-M451U/N can be equipped with the 
optional Data Security Kit, which completely encrypts and erases the data generated for each job.
Secure Network Card
The Network Interface provides highly secure operation by restricting access to the AR-M451U/N on 
your office network. Only PCs that have either their IP address or MAC (media access control) 
address registered are allowed to access, preventing unauthorised use. Also, network port and 
protocol management enhances security configuration by making it possible to disable unnecessary 
protocols and vulnerable ports.
Print Hold and Confidential Print
To keep others from seeing confidential documents as they are being printed out, the AR-M451U/N’s 
Print Hold function stores print data on its hard disk and withholds output until the user executes
a print command from the operation panel. For added security, the Confidential Print function
requires the user to enter in a personal identification number at the machine before printing 
can begin. 
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