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— answers from the official manualAnswers from the official manual.
Common questions
Common Questions
10 totalWhat is the type, size, and function of volatile memory?
The device uses DDR3-DRAM for volatile memory. The memory types are 2GB for enterprise models and 2.5GB for flow models. It functions as temporary storage during job processing and for applications running on the OS (Page 1).
How can I clear the volatile memory?
Volatile memory is automatically cleared whenever the device is powered off, as its contents are lost when power is removed. There are no specific steps required to manually clear this type of memory (Page 1).
What types of memory does the device contain?
The HP Color LaserJet Enterprise M681 and Managed E67550 series devices contain both volatile and non-volatile memory. Volatile memory is DDR3-DRAM used for temporary storage during job processing, retaining data only when powered on (Page 1). Non-volatile memory includes IOD EEPROM for backup/restore functions with a size of 32KB and SPI Flash for boot code and factory product configurations, totaling 4MB in size.
How can I clear the non-volatile memory?
There are no specific steps to clear the non-volatile memory, as it retains data when power is removed. Non-volatile memory includes SPI Flash which contains boot code and factory product configuration data (Page 1).
Does the device contain mass storage?
Yes, the device contains a hard disk drive with a size of 320GB for storing customer data, OS, applications, firmware images, persistent data, and temporary processing data (Page 2).
What methods can be used to securely erase the mass storage?
Secure Storage Erase overwrites temporary files and job data one or three times. Secure Disk Erase is an industry-standard ATA Secure Erase that clears all data on the hard drive, while Secure File Erase removes files after jobs finish processing by writing over them once or thrice (Page 2).
Full Manual
2 pages
|Hewlett-Packard Certificate of Volatility|Hewlett-Packard Certificate of Volatility|Hewlett-Packard Certificate of Volatility|Hewlett-Packard Certificate of Volatility|Hewlett-Packard Certificate of Volatility|Hewlett-Packard Certificate of Volatility|Hewlett-Packard Certificate of Volatility| |---|---|---|---|---|---|---| |Model: HP Color LaserJet Enterprise M681, M682 series HP Color LaserJet Managed E67550, E67560 series
|Model: HP Color LaserJet Enterprise M681, M682 series HP Color LaserJet Managed E67550, E67560 series
|Part Number:
Managed L3U70A = E67560Z L3U66A = E67550DH
Enterprise
J8A10A = M681dh
J8A11A = M681f
J8A12A = Flow M681f
|Part Number:
Managed L3U70A = E67560Z L3U66A = E67550DH
Enterprise
J8A10A = M681dh
J8A11A = M681f
J8A12A = Flow M681f
|Part Number:
Managed L3U70A = E67560Z L3U66A = E67550DH
Enterprise
J8A10A = M681dh
J8A11A = M681f
J8A12A = Flow M681f
|Address: Hewlett Packard Company 11311 Chinden Blvd Boise, ID 83714|Address: Hewlett Packard Company 11311 Chinden Blvd Boise, ID 83714| |Volatile Memory|Volatile Memory|Volatile Memory|Volatile Memory|Volatile Memory|Volatile Memory|Volatile Memory| |Does the device contain volatile memory (Memory whose contents are lost when power is removed)? Yes
| | |---|
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No If Yes please describe the type, size, function, and steps to clear the memory below
|Does the device contain volatile memory (Memory whose contents are lost when power is removed)? Yes
| | |---|
| | |---|
No If Yes please describe the type, size, function, and steps to clear the memory below
|Does the device contain volatile memory (Memory whose contents are lost when power is removed)? Yes
| | |---|
| | |---|
No If Yes please describe the type, size, function, and steps to clear the memory below
|Does the device contain volatile memory (Memory whose contents are lost when power is removed)? Yes
| | |---|
| | |---|
No If Yes please describe the type, size, function, and steps to clear the memory below
|Does the device contain volatile memory (Memory whose contents are lost when power is removed)? Yes
| | |---|
| | |---|
No If Yes please describe the type, size, function, and steps to clear the memory below
|Does the device contain volatile memory (Memory whose contents are lost when power is removed)? Yes
| | |---|
| | |---|
No If Yes please describe the type, size, function, and steps to clear the memory below
|Does the device contain volatile memory (Memory whose contents are lost when power is removed)? Yes
| | |---|
| | |---|
No If Yes please describe the type, size, function, and steps to clear the memory below
| |Type (SRAM, DRAM, etc): DDR3 - DRAM
|Size: 2GB- Ent 2.5GB Flow|Size: 2GB- Ent 2.5GB Flow|User Modifiable:
| | |---|
Yes
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No|Function: Used for temporary storage during the process of jobs, and for applications that are running on the OS.|Function: Used for temporary storage during the process of jobs, and for applications that are running on the OS.|Steps to clear memory: When the printer is powered off the memory is erased.| |Type (SRAM, DRAM, etc):|Size:
|Size:
|User Modifiable:
| | |---|
Yes
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No|Function:|Function:|Steps to clear memory:| |Type (SRAM, DRAM, etc):|Size:
|Size:
|User Modifiable:
| | |---|
Yes
| | |---|
No|Function:|Function:|Steps to clear memory:|
|Non-Volatile Memory|Non-Volatile Memory|Non-Volatile Memory|Non-Volatile Memory|Non-Volatile Memory| |---|---|---|---|---| |Does the device contain non-volatile memory (Memory whose contents are retained when power is removed)? Yes
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No If Yes please describe the type, size, function, and steps to clear the memory below
|Does the device contain non-volatile memory (Memory whose contents are retained when power is removed)? Yes
| | |---|
| | |---|
No If Yes please describe the type, size, function, and steps to clear the memory below
|Does the device contain non-volatile memory (Memory whose contents are retained when power is removed)? Yes
| | |---|
| | |---|
No If Yes please describe the type, size, function, and steps to clear the memory below
|Does the device contain non-volatile memory (Memory whose contents are retained when power is removed)? Yes
| | |---|
| | |---|
No If Yes please describe the type, size, function, and steps to clear the memory below
|Does the device contain non-volatile memory (Memory whose contents are retained when power is removed)? Yes
| | |---|
| | |---|
No If Yes please describe the type, size, function, and steps to clear the memory below
| |Type (Flash, EEPROM, etc): IOD EEPROM
|Size: 32KB|User Modifiable:
Yes No|Function:
backup/restore|Steps to clear memory: There are no steps to clear this data.| |Type (Flash, EEPROM, etc): SPI Flash
|Size: 4MB|User Modifiable:
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Yes
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No|Function:
Contains the boot code and factory product configuration data required for the device to function. User modifications are limited to downloading digitally signed HP firmware images.|Steps to clear memory:
There are no steps to clear this data| |Type (Flash, EEPROM, etc):|Size:|User Modifiable:
| | |---|
Yes
| | |---|
No|Function:
|Steps to clear memory:|
Mass Storage
Does the device contain mass storage memory (Hard Disk Drive, Tape Backup)? Yes
No If Yes please describe the type, size, function, and steps to clear the memory below Type (HDD, Tape, etc): Size: User Modifiable: Function: HDD 320GB Yes No
| | |---|
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Steps to clear memory:
Stores customer data, OS, applications, digitally signed firmware images, persistent data, and temporary data used for processing and system functions
There are several ways to erase this:
|USB| |---| |Does the item accept USB input and if so, for what purpose (i.e Print Jobs, device firmware updates, scan upload)? Yes No If Yes please describe below
| |Print jobs, HP digitally signed firmware upgrades, 3rd party application loading. USB ports can be disabled.| |Can any data other than scan upload be sent to the USB device)? Yes No If Yes please describe below
| |Diagnostic service logs can be uploaded. Print files can be printed via a USB thumb drive.|
|RF/RFID|RF/RFID| |---|---| |Does the item use RF or RFID for receive or transmit of any data including remote diagnostics. (e.g. Cellular phone, Bluetooth)
| | |---|
Yes
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No If Yes please describe below|Does the item use RF or RFID for receive or transmit of any data including remote diagnostics. (e.g. Cellular phone, Bluetooth)
| | |---|
Yes
| | |---|
No If Yes please describe below| |Purpose:|Purpose:| |Frequency:|Bandwidth:| |Modulation:|Effective Radiate Power (ERP):| |Specifications:|Specifications:|
|Other Transmission Capabilities|Other Transmission Capabilities| |---|---| |Does the device employ any other methods of non-wired access to transmit or receive any data whatsoever (e.g. anything other than standard hard wired TCP/IP, direct USB, or parallel connections)? Yes X No If Yes please describe below:|Does the device employ any other methods of non-wired access to transmit or receive any data whatsoever (e.g. anything other than standard hard wired TCP/IP, direct USB, or parallel connections)? Yes X No If Yes please describe below:| |Purpose:|Purpose:| |Frequency:|Bandwidth:| |Modulation:|Effective Radiate Power (ERP):| |Specifications:|Specifications:|
|Other Transmission Capabilities|Other Transmission Capabilities| |---|---| |Does the device employ any other methods of non-wired access to transmit or receive any data whatsoever (e.g. anything other than standard hard wired TCP/IP, direct USB, or parallel connections)? Yes
|X| |---|
No If Yes please describe below:|Does the device employ any other methods of non-wired access to transmit or receive any data whatsoever (e.g. anything other than standard hard wired TCP/IP, direct USB, or parallel connections)? Yes
|X| |---|
No If Yes please describe below:| |Purpose:|Purpose:| |Frequency:|Bandwidth:| |Modulation:|Effective Radiate Power (ERP):| |Specifications:|Specifications:|
|Other Capabilities| |---| |Does the device employ any other method of communications such as a Modem to transmit or receive any data whatsoever?
| | |---|
Yes
| | |---|
No If Yes please describe below:| |Purpose:| |Specifications:|
|Author Information|Author Information|Author Information|Author Information| |---|---|---|---| |Name:|Title:|Email:|Business Unit:|
Technical.marketing@hp.com
|Casey Campbell|echnical Marketing Engineer
| |IPG| |---|---|---|---| |Name: Jose Cervantes|Title: System Engineer|Email: Technical.marketing@hp.com|Business Unit: IPG| |Date Prepared: 08-12-13|Date Prepared: 08-12-13|Date Prepared: 08-12-13|Date Prepared: 08-12-13|