HP Z8 G4 Maintenance And Service Guide

IMPORTANT: Resetting will result in the loss of information.
These steps will not reset Custom Secure Boot Keys. See question and answer 7 for information about
resetting the keys.
a. Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup Menu”
message is displayed at the bottom of the screen.
b. Select Main, and then select Reset BIOS Security to Factory Default.
c. Follow the on-screen instructions.
d. Select Main, select Save Changes and Exit, and then follow the on-screen instructions.
7. How can the Custom Secure Boot Keys be reset?
Secure Boot is a feature to ensure that only authenticated code can start on a platform. If you enabled
Secure Boot and created Custom Secure Boot Keys, simply disabling Secure Boot will not clear the keys.
You must also select to clear the Custom Secure Boot Keys. Use the same Secure Boot access procedure
you used to create the Custom Secure Boot Keys, but make the selection to clear or delete all Secure Boot
Keys.
a. Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup Menu”
message is displayed at the bottom of the screen.
b. Select the Security menu, select Secure Boot Conguration, and then follow the on-screen
instructions.
c. At the Secure Boot Conguration window, select Secure Boot, select Clear Secure Boot Keys, and then
follow the on-screen instructions to continue.
Using HP Sure Start (select models only)
Select computer models are congured with HP Sure Start, a technology that continuously monitors your
computer's BIOS for attacks or corruption. If the BIOS becomes corrupted or is attacked, HP Sure Start restores
the BIOS to its previously safe state, without user intervention. Those select computer models ship with HP Sure
Start congured and enabled. HP Sure Start is congured and already enabled so that most users can use the HP
Sure Start default conguration. The default conguration can be customized by advanced users.
To access the latest documentation on HP Sure Start, go to http://www.hp.com/support, and select your country.
Select Drivers & Downloads, and then follow the on-screen instructions.
102 Appendix B Statement of memory volatility

HP Z8 G4 Specifications

General

Display included	No
Keyboard included	Yes
Power supply	1125 W
Operating system architecture	64-bit
Audio chip	Realtek ALC221
Product type	Workstation
Market positioning	Business
Motherboard chipset	Intel C622
Chassis type	Tower
Product color	Black
Country of origin	China
Number of 3.5\" bays	4
Number of 5.25\" bays	2
PCI Express x8 slots	3
Headphone outputs	1
HDMI ports 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.
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	8
Cabling technology	10/100/1000Base-T(X)
Ethernet LAN data rates	10, 100, 1000 Mbit/s
HDD speed	7200 RPM
HDD interface	SATA
Storage media	HDD
Optical drive type	DVD Super Multi
Card reader integrated	-
Total storage capacity	1000 GB
Memory slots	24x DIMM
Internal memory	8 GB
Memory channels	Hepta-channel
Memory clock speed	2666 MHz
Internal memory type	DDR4-SDRAM
Maximum internal memory	- GB
Memory layout (slots x size)	1 x 8 GB
Tcase	77 °C
Stepping	U0
Processor cache	11 MB
Processor model	4108
System bus rate	- GT/s
Processor socket	LGA 3647 (Socket P)
Processor threads	16
Processor codename	Skylake
Processor frequency	1.8 GHz
Processor cache type	L3
Processor lithography	14 nm
Processor manufacturer	Intel
PCI Express slots version	3.0
Processor boost frequency	3 GHz
Thermal Design Power (TDP)	85 W
Maximum number of PCI Express lanes	48
Memory clock speeds supported by processor	2400 MHz
Maximum internal memory supported by processor	768 GB
Scalability	2S
Processor code	SR3GJ
Processor ARK ID	123544
Intel TSX-NI version	1.00
Processor package size	76.0 x 56.5 mm
Supported instruction sets	AVX, AVX 2.0, AVX-512, SSE4.2

Weight and Dimensions

Depth	551.2 mm
Width	215.9 mm
Height	444.5 mm
Weight	22400 g