HP LaserJet M9040/M9050 Service Manual - Page 568
Certificate of volatility, Types of memory, Volatile memory, Hard-disk-drive memory
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Certificate of volatility This is a statement regarding the volatility of customer data stored in memory. It also outlines how to erase secure data from the product. Types of memory Volatile memory The product utilizes volatile memory (384 MB installed) to store customer data during the printing and copying process. When the product is powered off, this volatile memory is erased. Non-volatile memory The product utilizes non-volatile memory (EEPROM) to store system control data and user preference settings. No customer print or copy data is stored in non-volatile memory. This non-volatile memory can be cleared and restored to factory defaults by performing a cold reset or by restoring factory defaults from the control panel. Hard-disk-drive memory The product contains an internal hard disk drive (40GB or larger) that may retain data after the product is powered off. The product also may contain an additional optional external EIO hard disk. Data stored in these devices may be from incoming/outgoing fax or e-mail files, stored copy or print jobs, fax or email address books, or third-party solutions. Some of this data can be erased from the product control panel, but most must be erased using the Secure Storage Erase features available within HP Web Jetadmin. Secure Storage Erase features comply with U.S. Department of Defense (DOD) specification 5220-22.M. 550 Appendix C Regulatory information ENWW
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