Reference Guide

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Statement of Volatility – Dell Precision 7520
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
The Dell Precision 7520 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 7520 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
Flash in
embedded
controller
MEC5085
U51
288 KB of embedded Flash
memory for keyboard
controller BIOS code, asset
tag and BIOS passwords.
4K Boot block protection.
No
N/A
Panel EEDID
EEPROM
Part of panel
assembly
Non Volatile memory, 512
bytes.
No
Part of panel assembly
System BIOS
U52(16MB)
Non Volatile memory, 128 Mbit
(16 MB), System BIOS and
Video BIOS for basic boot
operation, PSA (on board diags),
PXE diags.
No
N/A
Video BIOS
For SG mode
For DSC mode
using MXX
VBIOS include in system
BIOS (U52)
2Mb for nVidia N17P-Q1
2Mb for nVidia N17P-Q3
4Mb for AMD F16M-S2-50
Baffin Pro WX4150
4Mb for AMD F16M-S1-30
Baffin LE WX4130
No
N/A
System
Memory –
DDR4
memory
Four SODIMM
connectors:
JDIMM1,2,3,4
Volatile memory in OFF state
Two to four modules must be
populated. System memory size
will depend on SODIMM
modules and up to 64 GB.
No
Power off system
System
memory SPD
EEPROM
On memory
SODIMM(s) –
1-4 present
Non Volatile memory 512
Bytes.
Stores memory manufacturer
data and timing information for
correct operation of system
memory.
No
N/A