Statement of Volatility Latitude 7310
Latitude 7310 — Statement of Volatility
The Dell Latitude 7310 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 Latitude 7310 system board.
| Description | Reference Designator | Volatility Description | User Accessible for external data | Remedial Action (Action necessary to prevent loss of data) |
|---|---|---|---|---|
| SSD drives. | M.2 - 2230 | Non Volatile magnetic media, various sizes in GB. SSD (solid-state flash drive). | No | Low-level format |
| System BIOS/EC | UE1 | Non-Volatile memory, 256 Mbit (16 MB), and Video BIOS for basic boot operation, PSA (on board diagnostics), PXE diagnostics. | No | Not applicable |
| Thunderbolt EEPROM | UT2 | Non-Volatile memory, 8 Mbit (1 MB) (Thunderbolt FW) | No | Not applicable |
| USB-Type C Power Delivery | U6 | Non-Volatile memory , 8 Mbit (1 MB) for USB type-C PD F/W | No | Not applicable |
| LCD Panel EEDID EEPROM | Part of panel assembly | Non-Volatile memory, Stores panel manufacturing information, display configuration data. | No | Not applicable |
| System Memory - DDR4 memory | Four pcs on board DDR4 memory: UD1, UD2, UD3, UD4, UD5, UD6, UD7, UD8 | Volatile memory in OFF state (see state definitions later in text) Four pcs on board DDR4 memory. System memory size depends on chip size and must be between 4 GB. , 8 GB 16 GB, and 32 GB | Yes | Power off system |
| RTC CMOS | UC1 (PCH) | Non-Volatile memory 256 bytes Stores CMOS information | No | Not applicable |
| Video memory - frame buffer | For UMA platform: Using system memory | Volatile memory in off state. UMA uses main system memory size that is allocated out of main memory. | No | Power off system |
| Intel ME Firmware | Combine on BIOS ROM. | Non-Volatile memory, Intel ME firmware for system configuration, security, and protection | No | Not applicable |
| Security Controller Serial Flash Memory | U1 (upsell USH daughter board) | Non-Volatile memory, 128 Mbit (16 Mbyte) | No | Not applicable |
| TPM Controller | U Z12 | Non-Volatile memory, 384 Kbytes. | No | Not applicable |
| ISH | Combine on BIOS ROM. | No | Not applicable | |
| Touch screen Embedded Flash | N/A | Non-Volatile memory | No | Not applicable |
| Digital IMVP8 controller | PU602 | Non-Volatile memory, 4096 bit (512 B) Digital IMVP8 controller | No | Not applicable |
| HDMI PROTOCOL CONVERTER SPI ROM | UV32 | Non-Volatile memory (2M-bit) | No | Not applicable |
NOTE: All other components on the system board lose data if power is removed from the system. Primary power loss (unplugging the power cable and removing the battery) destroys all user data on the memory ( LP DDR3, 2133 MHz), system data on the system configuration and time-of-day information.
In addition, to clarify memory volatility and data retention in situations where the system is put in different ACPI power states the following is provided (those ACPI power states are S0, Modern standby, S4 and S5):
- S0 state is the working state where the dynamic RAM is maintained and is read/write by the processor. Modern standby is a standby mode state that is different from S3 mode. In this state, the dynamic RAM is maintained.
- S4 is called "suspend to disk" state or "hibernate" mode. There is no power. In this state, the dynamic RAM is not maintained. If the system has been commanded to enter S4, the operating system writes the system context to a non-volatile storage file and leave appropriate context markers. When the system is coming back to the working state, a restore file from the non-volatile storage can occur. The restore file has to be valid. Dell systems can go to S4 if the operating system and the peripherals support S4 state. Win 7 and Win 8 support S4 state.
- S5 is the "soft" off state. There is no power. The operating system does not save any context to wake up the system. No data remains in any component on the system board, that is cache or memory. The system requires a complete boot when awakened. Since S5 is the shut off state, coming out of S5 requires power-on which clears all registers.
The following table shows all the states that are supported by Latitude 7310:
| Model Number | S0 | Modern standby | S4 | S5 |
|---|---|---|---|---|
| Latitude 7310 |  | | | |
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