Dell Latitude E5540 Statement of Volatility - Page 1

Statement of Volatility - Dell Latitude™ E5440/E5540 CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. The Dell Latitude™ E5440/E5540 contains both volatile and non-volatile (NV) components. Volatile components lose their data immediately after power is removed from the component. Non-volatile (NV) components continue to retain their data even after power is removed from the component. The following NV components are present on the Dell Latitude™ E5440/E5540 system board. Table 1. List of Non-Volatile Components on System Board Description Reference Designator Volatility Description User Accessible for external data Remedial Action (Action necessary to prevent loss of data) Embedded U38 Flash in embedded controller MEC5075 256K and 2K byte of No embedded Flash memory for embedded controller BIOS code, asset tag and BIOS passwords Panel Part of panel Non Volatile memory 64K No EEDID assembly bytes. Stores panel EEPROM manufacturing information, display configuration data System BIOS U1,U2 Non Volatile memory, 64Mbit No (8MB), 32Mbit (4MB) System BIOS and Video BIOS for basic boot operation, PSA (on board diags), PXE diags. System Memory - DDR3L memory System memory SPD EEPROM Connectors JDIMM1 and JDIMM2 Volatile memory in OFF state Yes (see state definitions later in text) One or both modules will be populated. System memory size will depend on SoDIMM modules and will be between 1GB and 8GB On memory Non-Volatile memory 2Kbit No SoDIMM(s) (256 bytes). One device - one or two present on each SoDIMM. present Stores memory manufacturer data and timing information for correct operation of system memory. N/A N/A N/A Power off system N/A RTC CMOS - BBRAM (battery backed up) UC1 Non Volatile memory 256 No bytes. Stores CMOS information Video memory - frame buffer UMA Volatile memory in off state. No architecture- 2GB DDR3L for Discrete uses system Graphics systems. UMA uses DDR3L. main system memory size Discrete allocated out of main memory. graphics Remove the on-board coin cell battery Enter S3-S5 state described below. Month yyyy