Reference Guide

01/2020
Statement of Volatility – Dell E2720HS Monitor
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and
tells you how to avoid the problem
The purpose of this document is to certify that Dell’s E2720HS monitor will not save, retain or
reproduce a signal to any internal or external component after power has been removed and
reapplied to the unit.
The Dell E2720HS monitor contains both volatile and non-volatile (NV) memory ICs. Volatile
memory(s) lose their data immediately upon removal of power. Non-volatile memory ICs
continue to retain their data even after the power has been removed. However, no input video
data is written into these memory ICs during operation.
List below contains volatile and non volatile memory ICs used in Dell E2720HS monitor.
System EEPROM
ST M24C16
Size
16Kbit
Type [e.g. Flash PROM,
EEPROM]
EEPROM
Volatility
Non-volatile
Can user programs or
operating system write data to
it during normal operation?
OSD setting: Yes
Purpose
Storage of system setting (OSD)
How is data input to this
memory?
Control the OSD menu and change OSD setting(ex.
Brightness, contrast, color setting) and the setting will
be stored into system EEPROM
How is this memory write
protected?
Software write protected
VGA EDID EEPROM
ST M24C02
Size
2Kbit
Type [e.g. Flash PROM,
EEPROM]
EEPROM
Volatility
Non-volatile
Can user programs or
operating system write data to
it during normal operation?
No
Purpose
Storage of VGA EDID
How is data input to this
memory?
VGA EDID is embedded in the firmware, and copied
to EEPROM after F/W programming.
(or via customized EDID tool)