HP ProBook 4540s User Manual

Heat sink
All heat sink spare part kits include replacement thermal material.
Description Spare part number
For use in 4540s models:
Heat sink for use in models with UMA graphics and a removable processor 683489-001
Heat sink for use in models with discrete graphics and a removable processor 683490-001
Heat sink for use in models with UMA graphics and the processor soldered to the system board 712920-001
Heat sink for use in models with discrete graphics and the processor soldered to the system
board
712919-001
For use in 4440s/4441s models:
Heat sink for use in models with discrete graphics and a removable processor 683655-001
Heat sink for use in models with UMA graphics and a removable processor 683656-001
Heat sink for use in models with discrete graphics and the processor soldered to the system
board
713376-001
Heat sink for use in models with UMA graphics and the processor soldered to the system board 713377-001
Before removing the heat sink, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet,
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 55).
5. Remove the following components:
a. Bottom door (see
Bottom door on page 58).
b. Keyboard (see
Keyboard on page 70)
c. Heat shield (see
Heat shield on page 73)
d. Fan (see
Fan on page 75)
Remove the heat sink:
1. Position the computer upside-down.
2. To remove the discrete heat sink, in the order indicated, loosen the six captive Phillips screws
(1) that secure the heat sink to the system board.
Component replacement procedures 77

HP ProBook 4540s Specifications

General

Form factor	Clamshell
Product type	Laptop
Product color	Black, Grey
Country of origin	China
Memory slots	2x SO-DIMM
Internal memory	2 GB
Memory clock speed	1333 MHz
Internal memory type	DDR3-SDRAM
Maximum internal memory	8 GB
Memory layout (slots x size)	1 x 2 GB
HDD speed	5400 RPM
HDD interface	SATA
Storage media	HDD
Optical drive type	DVD Super Multi DL
Card reader integrated	Yes
Total storage capacity	750 GB
Compatible memory cards	SD, SDHC, SDXC
Number of HDDs installed	1
Display diagonal	15.6 \
Display resolution	1366 x 768 pixels
Native aspect ratio	16:9
On-board graphics card ID	0x166
Discrete graphics card model	AMD Radeon HD 7650M
On-board graphics card model	Intel® HD Graphics 4000
Discrete graphics card memory	1 GB
Discrete graphics memory type	GDDR3
On-board graphics card base frequency	650 MHz
On-board graphics card dynamic frequency (max)	1000 MHz
Intel segment tagging	Enterprise
Number of built-in speakers	2
Front camera signal format	720p
Charging port type	DC-in jack
DisplayPorts quantity	0
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Battery capacity	47 Wh
Battery life (max)	7 h
Number of battery cells	6
Sustainability certificates	ENERGY STAR
Pointing device	Touchpad
Bus type	DMI
Stepping	L1
Tjunction	90 °C
Processor cache	3 MB
Processor model	i3-3110M
System bus rate	5 GT/s
Processor family	Intel® Core™ i3
Processor socket	BGA 1023
Processor threads	4
Processor codename	Ivy Bridge
Processor frequency	2.4 GHz
Processor cache type	Smart Cache
Processor lithography	22 nm
Processor manufacturer	Intel
Processor front side bus	- MHz
PCI Express slots version	2.0
Processor operating modes	64-bit
PCI Express configurations	1x16, 2x8, 1x8+2x4
Thermal Design Power (TDP)	35 W
CPU multiplier (bus/core ratio)	24
Maximum number of PCI Express lanes	16
Operating system installed	FreeDOS
AC adapter power	90 W
Processor code	SR0N2
Processor ARK ID	65700
Processor package size	37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023) mm
Supported instruction sets	AVX
Intel Identity Protection Technology version	1.00

Weight and Dimensions

Depth	256 mm
Width	375 mm
Height	28 mm
Weight	247 g