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Administrator Guide

ManualsBrandsDell ManualsConverged InfrastructurePrecision 3650 Tower
12
May 2021
Statement of Volatility – Dell Precision 3650 Tower
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
The Dell Precision 3650 Tower contains both volatile and non-volatile components. Volatile components lose
their data immediately after power is removed from the component. Non-volatile components continue to
retain their data even after power is removed from the component. The following Non-volatile components are
present on the Precision 3650 Tower 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 memory
in embedded
controller
Microchip
DEC1515H-
D0-I/Z2
EC
256 K bytes Code/Data SRAM (224 KB
optimized for code performance, 32 KB
optimized for code performance), 64 bytes
Battery Powered Storage SRAM
No
N/A
System BIOS
U2502
Non-volatile memory, 256 Mbits (32 MB),
System BIOS and Video BIOS for basic boot
operation, ePSA (on board diagnostics.)
No
N/A
TPM Nuvoton
NPCT750JAD
YX
U9101
16 K bytes non-volatile memory located in the
TPM module.
No
N/A
System
Memory –
DDR4 DIMM
memory
Connectors:
DIMM1, DIMM2,
DIMM3, DIMM4.
Volatile memory in OFF state (see state
definitions later in text)
One or two modules will be populated. System
memory size will depend on DIMM modules and
will be between 4 GB to 128 GB.
Yes
Power off system.
System
memory SPD
EEPROM
On memory
DIMM(s)
Non-volatile EEPROM memory. (256 bytes).
One Device present on each DIMM.
Stores memory manufacturer data and timing
information for correct operation of system
memory.
No
N/A
RTC CMOS
RTC
Volatile battery back-backed CMOS memory
256 bytes. Stores CMOS information.
No
Removing the on-board
Coin Cell battery.
Video memory
– type – see
next column
UMA
architecture-
uses system
memory.
Volatile memory in off state.
UMA uses main system memory size allocated
out of main memory.
No
Enter S3-S5 state below.
M.2 Solid
State Disk
User replaceable
Non-volatile magnetic media, various sizes in
GB.
Yes
Low level format.
Hard drive
User replaceable
Non-volatile magnetic media, various sizes in
GB.
Yes
Low level format.
CAUTION: All other components on the system board lose data if power is removed from the system. Primary power loss (unplugging the
power cord and removing the battery) destroys all user data on the memory (DDR4, 2667 MHz). Secondary power loss (removing the on-
board coin-cell battery) destroys system data on the system configuration and time-of-day information.

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