HP EliteDesk 705 G4 Maintenance and Service Guide 2 - Page 131

Table 12-1 Troubleshooting steps for nonvolatile memory usage (continued) Nonvolatile Memory Type Amount (Size) Does this memory store customer data? Does this memory retain data when power is removed? What is the purpose of this How is data input into this memory? memory? How is this memory write-protected? support. Select Find your product, and then follow the on-screen instructions. Intel Management 1.5 MB or 7 MB Yes Yes Engine Firmware (present only in select Elite or Z models. For more information, go to http://www.hp.com/ support. Select Find your product, and then follow the on- screen instructions.) Stores Management Engine Code, Settings, Provisioning Data and iAMT third-party data store. Management Engine Code is programmed at the factory. Code is updated via Intel secure firmware update utility. Unique Provisioning Data can be entered at the factory or by an administrator using the Management Engine (MEBx) setup utility. The third party data store contents can be populated by a remote management console or local applications that have been registered by an administrator to have access to the space. The Intel chipset is configured to enforce hardware protection to block all direct read/write access to this area. An Intel utility must be used for updating the firmware. Only firmware updates digitally signed by Intel can be applied using this utility. Bluetooth flash (select products only) 2 Mb No Yes Stores Bluetooth flash is A utility must be used for Bluetooth programmed at the factory. writing data to this configuration Tools for writing data to this memory and is made and firmware. memory are not publicly available through newer available but can be obtained versions of the driver from the silicon vendor. whenever the flash requires an upgrade. 802.11 WLAN 4 Kb to 8 Kb No Yes Stores 802.11 WLAN EEPROM is A utility must be used for EEPROM configuration programmed at the factory. writing data to this and calibration Tools for writing data to this memory and is typically data. memory are not made public. not made available to the public unless a firmware upgrade is necessary to address a unique issue. Webcam (select products only) 64 Kb No Yes Stores webcam Webcam memory is A utility must be used for configuration programmed using a utility writing data to this and firmware. from the device memory and is typically manufacturer that can be run not made available to the from Windows. public unless a firmware upgrade is necessary to address a unique issue. Fingerprint reader 512 KB flash Yes Yes (select products only) Stores fingerprint templates. Fingerprint reader memory is programmed by user enrollment in HP ProtectTools Security Manager. Only a digitally signed application can make the call to write to the flash. Nonvolatile memory usage 123