Reference Guide

Month yyyy
Statement of Volatility – Dell 7740
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
The Dell 7740 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 7740’s 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)
Panel
EEDID
EEPROM
Part of panel
assembly
Non Volatile memory,
128bytes.
No
Part of the panel assembly
System
BIOS
UC5
Non Volatile memory, 256
Mbit (32 MB), System BIOS,
embedded controller and
Video BIOS for basic boot
operation, PSA (on board
diags), PXE diags.
No
N/A
System
Memory –
DDR4
memory
Four
SODIMM
connectors:
JDIMM1,2,3,4
present
Volatile memory in OFF state
One to Four modules must be
populated. System memory
size will depend on SODIMM
modules and up to 128 GB.
No
Power off the system
System
memory
SPD
EEPROM
On System
memory
SODIMM(s)
JDIMM1,2,3,4
present
Non Volatile memory 512
Bytes.
Stores memory manufacturer
data and timing information
for correct operation of system
memory.
No
N/A
RTC
CMOS –
BBRAM
(battery
backed up)
JRTC1 Non Volatile memory, 256
Bytes.
Stores CMOS information.
No Remove the onboard coin cell
battery
Video
memory –
frame
buffer
For SG mode
sharing system
DDR4
For DSC mode
using DGFF
VRAM
Volatile memory in off state.
SG mode uses main system
memory size allocated out of
main memory.
Discrete graphics mode:
4GB GDDR5 for nVidia
N19P-Q3
No
Do not enter the S3-S5
State.