Dell OptiPlex 3090 User Manual

Steps
1. Lay the computer on the right side.
2. Disconnect the power cables from the system board and unroute them from the routing guides on the chassis.
3. Remove the three (#6-32) screws that secure the power-supply unit to the chassis.
4. Press the securing clip and slide the power-supply unit away from the back of the chassis.
5. Lift the power-supply unit off the chassis.
Installing the power-supply unit
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
WARNING:
The cables and ports on the back of the power-supply unit are color-coded to indicate the different
power wattage. Ensure that you plug in the cable to the correct port. Failure to do so may result in damaging the
power-supply unit and/or system components.
About this task
The following images indicate the location of the power-supply unit and provides a visual representation of the installation
procedure.
50
Removing and installing components

Dell OptiPlex 3090 Specifications

General

Processor cache	8 MB
Processor cores	4
Processor model	i5-1145G7
Processor family	Intel® Core™ i5
Configurable TDP-up	28 W
Processor frequency	- GHz
Configurable TDP-down	12 W
Processor manufacturer	Intel
Processor boost frequency	4.4 GHz
Configurable TDP-up frequency	2.6 GHz
Number of processors installed	1
Configurable TDP-down frequency	1.1 GHz
Non-ECC	Yes
Memory slots	2x SO-DIMM
Internal memory	16 GB
Memory channels	Dual-channel
Memory clock speed	3200 MHz
Internal memory type	DDR4-SDRAM
Maximum internal memory	64 GB
Microphone in	No
DisplayPort version	1.4
USB 2.0 ports quantity	0
Power supply	65 W
Power supply input voltage	100 - 240 V
Power supply input frequency	50 - 60 Hz
Operating shock	110 G
Operating altitude	-15.2 - 3048 m
Non-operating shock	160 G
Operating vibration	0.66 G
Non-operating altitude	-15.2 - 10668 m
Non-operating vibration	1.3 G
Storage temperature (T-T)	-40 - 65 °C
Operating temperature (T-T)	0 - 35 °C
Storage relative humidity (H-H)	0 - 95 %
Operating relative humidity (H-H)	10 - 90 %
Antenna type	2x2
LAN controller	Realtek RTL8111HS
Wi-Fi standards	Wi-Fi 5 (802.11ac)
Bluetooth version	5.0
Cabling technology	10/100/1000Base-T(X)
WLAN controller model	Qualcomm QCA61x4A
Ethernet LAN data rates	10, 100, 1000 Mbit/s
WLAN controller manufacturer	Qualcomm
SSD capacity	256 GB
SSD interface	NVMe, PCI Express
Storage media	SSD
SSD form factor	M.2
Operating system architecture	64-bit
Chassis type	UFF
Product color	Black
Cable lock slot type	Kensington
Discrete graphics card model	Not available
On-board graphics card model	Intel Iris Xe Graphics
Audio chip	Realtek ALC3204-CG
Audio system	High Definition Audio
Product type	Mini PC

Weight and Dimensions

Depth	19.7 mm
Width	96.1 mm
Height	256.2 mm
Weight	650 g