HP Z420 User Manual

6 Diagnostics and Minor
Troubleshooting
Calling technical support
At times you might encounter an issue that requires technical support. When you call technical support:
●
Have the computer readily accessible.
●
Write down the computer serial numbers, product numbers, model names, and model numbers
and have them in front of you.
●
Note any applicable error messages.
●
Note any add-on options.
●
Note the operating system.
●
Note any third-party hardware or software.
●
Note the details of any blinking LEDs on the front of the computer (tower and desktop
configurations) or on the side of the computer (all-in-one configurations).
●
Note the applications you were using when you encountered the problem.
NOTE: When calling in for service or support, you might be asked for the Product Number (example:
PS988AV) of the computer. If the computer has a Product Number, it is generally located next to the
10- or 12-digit Serial Number of the computer.
NOTE: On most models, the serial number and product number labels can be found on the top or
side panel and at the rear of the computer (tower and desktop configurations) or on a pull-out card on
the side of the display (all-in-one configurations).
For a listing of all worldwide technical support phone numbers, go to http://www.hp.com/support,
select your region, and click Connect with HP in the upper-right corner.
Calling technical support
33

HP Z420 Specifications

General

Tcase	64 °C
Bus type	QPI
Stepping	M1
FSB Parity	No
Processor cache	10 MB
Processor cores	4
Processor model	E5-1603
System bus rate	0 GT/s
Processor socket	LGA 2011 (Socket R)
Processor codename	Sandy Bridge EP
Processor frequency	2.8 GHz
Processor cache type	L3
Processor lithography	32 nm
Processor manufacturer	Intel
Processor front side bus	- MHz
PCI Express slots version	3.0
Processor operating modes	64-bit
ECC supported by processor	Yes
Thermal Design Power (TDP)	130 W
Number of processors installed	1
CPU multiplier (bus/core ratio)	28
Maximum number of PCI Express lanes	40
Memory types supported by processor	DDR3-SDRAM
Memory clock speeds supported by processor	800, 1066 MHz
Memory bandwidth supported by processor (max)	31.4 GB/s
Maximum internal memory supported by processor	375 GB
Product type	Workstation
Motherboard chipset	-
Internal memory	4 GB
Memory channels	Quad-channel
Memory clock speed	1600 MHz
Maximum internal memory	- GB
Memory layout (slots x size)	2 x 2 GB
HDD speed	7200 RPM
HDD capacity	500 GB
HDD interface	SATA
Optical drive type	DVD Super Multi
Discrete graphics card model	AMD FirePro V4900
Maximum graphics card memory	1.024 GB
Graphics card family	AMD
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.
Chassis type	Mini Tower
Product color	Black
Country of origin	China
Operating system installed	Windows 7 Ultimate
Sustainability certificates	ENERGY STAR
Processor code	SR0L9
Processor ARK ID	64600
Processor package size	52.5 x 45.0 mm
Supported instruction sets	AVX

Weight and Dimensions

Depth	- mm
Weight	- g