Dell Precision 7520 User Manual

4 Disconnect all network cables from the computer (if available).
CAUTION: If your computer has an RJ45 port, disconnect the network cable by rst unplugging the cable from your
computer.
5 Disconnect your computer and all attached devices from their electrical outlets.
6 Open the display.
7 Press and hold the power button for few seconds, to ground the system board.
CAUTION: To guard against electrical shock unplug your computer from the electrical outlet before performing Step # 8.
CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an
unpainted metal surface at the same time as touching a connector on the back of the computer.
8 Remove any installed ExpressCards or Smart Cards from the appropriate slots.
After working inside your computer
After you complete any replacement procedure, ensure that you connect external devices, cards, and cables before turning on your
computer.
CAUTION: To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use batteries
designed for other Dell computers.
1 Connect any external devices, such as a port replicator or media base, and replace any cards, such as an ExpressCard.
2 Connect any telephone or network cables to your computer.
CAUTION
: To connect a network cable, rst plug the cable into the network device and then plug it into the
computer.
3 Connect your computer and all attached devices to their electrical outlets.
4 Turn on your computer.
8
Working on your computer

Dell Precision 7520 Specifications

General

Form factor	Clamshell
Product type	Mobile workstation
Product color	Black
Memory slots	4x SO-DIMM
Internal memory	8 GB
Memory clock speed	2400 MHz
Memory form factor	SO-DIMM
Internal memory type	DDR4-SDRAM
Maximum internal memory	64 GB
Memory layout (slots x size)	1 x 8 GB
3D	No
AC adapter included	Yes
HDD speed	7200 RPM
HDD interface	SATA III
Storage media	HDD
Total storage capacity	500 GB
Compatible memory cards	SD, SDHC, SDXC
Number of HDDs installed	1
Display surface	Matt
Display diagonal	15.6 \
Native aspect ratio	16:9
On-board graphics card ID	0x591B
Discrete graphics card model	Not available
On-board graphics card model	Intel® HD Graphics 630
On-board graphics card OpenGL version	4.4
On-board graphics card base frequency	350 MHz
On-board graphics card DirectX version	12.0
On-board graphics card dynamic frequency (max)	1000 MHz
Audio system	MaxxAudio Pro
Speakers manufacturer	Waves
Wi-Fi standards	Wi-Fi 5 (802.11ac)
Ethernet LAN data rates	10, 100, 1000 Mbit/s
ExpressCard slot	-
Charging port type	DC-in jack
USB 2.0 ports quantity	0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	4
Pointing device	Touchpad
Operating system architecture	64-bit
Battery capacity	72 Wh
Number of battery cells	6
AC adapter power	180 W
AC adapter frequency	50 - 60 Hz
AC adapter input voltage	100 - 240 V
AC adapter output current	9.23 A
AC adapter output voltage	19.5 V
Operating shock	140 G
Operating altitude	-15.2 - 3048 m
Non-operating shock	163 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 - 40 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	10 - 90 %
Bus type	DMI3
Tjunction	100 °C
Processor cache	6 MB
Processor model	i5-7300HQ
System bus rate	8 GT/s
Processor family	Intel® Core™ i5
Processor series	Intel Core i5-700 Desktop Series
Processor codename	Kaby Lake
Processor frequency	2.5 GHz
Configurable TDP-down	35 W
Processor lithography	14 nm
Processor manufacturer	Intel
PCI Express slots version	3.0
Processor boost frequency	3.5 GHz
PCI Express configurations	1x16, 1x8+2x4, 2x8
Thermal Design Power (TDP)	45 W
Maximum number of PCI Express lanes	16
Processor ARK ID	97456
Processor package size	42 x 28 mm
Supported instruction sets	AVX 2.0, SSE4.1, SSE4.2
Intel Identity Protection Technology version	1.00
Intel Stable Image Platform Program (SIPP) version	0.00
Motherboard chipset	Intel® CM238
Sustainability certificates	ENERGY STAR

Weight and Dimensions

Depth	261 mm
Width	378 mm
Weight	2800 g
Height (rear)	33 mm
Height (front)	27.76 mm