This Helix 520 / Karbon 520 Series BIOS Manual covers OnLogic Custom Features and displays standard options and configurations in the BIOS. Additional content pertaining to other configurable elements may be added in subsequent versions of this manual.
To access the BIOS setup menu, hold the Delete key on the keyboard while turning the system on. After a few seconds, the BIOS front page menu will appear.
On each menu, the selected option is shown in white, other options are shown in blue, and read-only options are shown in gray. Some menus have multiple screens, which are shown at the top of the screen. The active screen has a gray background and inactive screens have blue backgrounds.
BIOS menus are navigated by pressing keys on the keyboard:
F1: Shows help on available keyboard shortcuts.
↑/↓: Select the option above or below the currently-selected option.
→/←: Activate the screen to the right or left of the currently-activated screen.
Enter: Activates the selected option. If the option is a menu, the menu is opened. If the selected option is a configurable option, a dialog box is opened to enter a new value.
F5/F6: Change the selected option to its previous or next value.
Esc: Returns to the previous menu.
F9: Restores all options to their factory default values.
F10: Saves all options and restarts the system.
Several options are available on the front page:
Continue: continues the boot process normally, booting the installed operating system
Boot Manager: opens a menu to select which device should be booted
Device Management: opens a menu which shows the status of the system hardware
The boot manager menu shows the devices available to be booted. The installed operating system and any attached USB drives will be listed. If enabled in the setup utility, the UEFI shell is also listed. Selecting an option boots it.
The setup utility shows the status of the system and allows many configuration options to be changed. These options affect the functionality, stability and security of the system, and should not be changed without an understanding of their meaning.
The setup utility has many screens. Press the →/← arrow keys to select between them.
Several configuration options are frequently used.
Default value: S0 State; possible values: S0 State, S5 State
Controls the state the system enters after G3 (power loss). If set to S5, the system remains off when initially connected to power. If set to S0, the system boots when connected to power.
Secure Boot verifies the digital signatures of boot software to ensure only trusted software loads during a computer's startup. A Supervisor password is required to change these settings.
Default value: Enabled; possible values: Enabled, Disabled
Enables or disables Wake-on-LAN functionality on the onboard network interfaces.
The main screen shows the BIOS version, information about the installed CPU, and the system date and language.
CPU Configuration
The "CPU Configuration" section provides a comprehensive set of options for managing the processor's features, performance, and security.
Chipset Configuration
This section contains settings related to the motherboard's chipset. A warning precedes these settings, indicating that incorrect values can lead to system malfunction.
System Agent (SA) Configuration
Advanced > System Agent (SA) Configuration -> Graphics Configuration
Primary Display:
When set to Auto, with iGFX enabled, and an external GPU card and monitor are connected, the BIOS will direct video output to the external card.
If no monitor is connected, the system will reboot and switch to the internal graphics.
PCH-IO Configuration
PCH-FW Configuration
This section pertains to the Serial ATA (SATA) interface, primarily used for connecting storage devices. The top-level entries for individual SATA ports (0-7) are informational placeholders.
RAID Mode Configurations (HX522/K522 Specific)
This section pertains to RAID Mode configuration in the BIOS.
On the front page of the BIOS navigate to "Device Management".
Enter "ASMedia 106x RAID Mode Setting #0"
Select the RAID Mode under "Controller #0: RAID mode Setting"
Set "Controller #0: RAID Mode Change for next Reset" to "Yes"
Press "F10" to save the change.
Return to the BIOS Front Page and Select "Continue"
Press Ctrl + Alt + Del to perform a cold reboot
USB Configuration
This section manages the system's Universal Serial Bus (USB) controllers and ports.
Advanced > SIO NCT6126D
UART Port Configuration
Power Enable: COM port power over enable.
Default mode: Disabled.
This section groups settings for the system's power consumption and performance.
OnLogic Feature Configuration
Pseudo G3: A power management state that mimics a full power-off (G3) while maintaining a low-power state for faster wake-up times.
M.2 Power Off in Soft-Off State: When enabled, the M.2 slot will power off during soft-off states, including hibernation and system shutdown, to save more power.
Retimer Compliance Mode: This is for Thunderbolt certification tests only when enabled.
Console redirection allows the input and output of a computer's console to be rerouted to another device or location, often for remote management or troubleshooting
Automotive Ignition
Advanced > Automotive Ignition (Only for Karbon 520)
For a brief overview of automotive ignition functionality, refer to the .
Automotive ignition settings are shown below. Note: These values are only examples.
Input Voltage (Unit: Volt): [12.0]
Ignition State:
Automotive Mode:
Description of Settings:
Input Voltage: Instant input voltage level reading.
Ignition State: Instant ignition state reading.
Automotive Mode: Enable or disable all automotive ignition features.
In-Band Error Correction Code (IBECC) is a specialized memory protection technology designed to enhance system reliability without requiring the additional physical memory chips traditionally associated with ECC (Error Correction Code). Unlike standard ECC, which utilizes dedicated "side-band" data lanes and extra DRAM chips to store parity bits, IBECC embeds the error-correcting data directly within the standard memory bandwidth. This allows for industrial-grade data integrity on hardware configurations. IBECC protects data against single-bit errors (Single-Bit Error Correction) and detects multi-bit errors (Double-Bit Error Detection) within the existing memory ranks. A small portion of the system’s total available RAM is reserved to store the ECC metadata. This results in a negligible reduction in total usable memory but significantly increases resilience against data corruption.
Enabling IBECC
To enable IBECC, enable Expert Mode and navigate to Advanced > Memory Configuration.
Set In-Band ECC Support to Enabled.
BIOS Secure Boot is a security feature that prevents malicious software from loading during your PC's startup. It verifies the digital signatures of boot components against a database of trusted keys. If a signature doesn't match, the system will not boot, protecting against pre-boot malware.
To enable Secure Boot:
Go to the Security page to set a Supervisor Password. Then save and exit.
Go to "Administer Secure Boot" on the front page to enable secure boot.
After enabling Secure Boot, the system will only boot to signed EFI boot files or Operating Systems.
If the BIOS detects a 5-second assertion of FAC_RST_R_N at power-on, it will:
Reset default UEFI settings to OnLogic factory defaults.
Clear any custom defaults.
Clear any UEFI passwords (Power On and Boot).
To perform a factory reset:
Hold the factory reset button while the system is powered off.
While holding the reset button, press the power button to power the system on.
After 5 seconds, release the factory reset button.
BIOS Secure Flash is a security measure that protects the BIOS from unauthorized modifications by requiring digitally signed BIOS updates. Only OnLogic-signed BIOS images can be updated to the system.
The exit screen provides options to leave the setup utility and to load and save settings.
Exit Saving Changes: saves the current configuration and restarts the system to apply it
Save Change Without Exit: saves the current configuration but does not restart the system
Exit Discarding Changes: returns to the front page without saving or applying the current configuration
Remote Power Control
Only one of the four onboard LAN ports supports vPro. Port 4, as shown below, must be used to connect to the host PC.
To enable Intel AMT using MEBX in the BIOS setup menu:
Navigate to the front page of the BIOS setup menu and select MEBX.
Set up a new password. First, enter the default password: admin, then enter a new password.
After setting a new password, Intel® AMT will be enabled.
To access Local AMT:
Open the system's Device Manager and check that the LAN device is enumerated correctly.
Open a browser and load the local WebUI: http://127.0.0.1:16992.
Enter the Intel® AMT login, input username (admin) and the password.
On another system on the same network, open a browser and open the WebUI as follows: https://[DUT IP address]:16993.
Ensure both systems are connected to the same network.
If a message indicating “Your connection is not private” appears, select proceed.
Go to BIOS setting > Setup Utility > Advanced > PCH-FW Configuration > AMT Configuration > MAC Pass Through .
Check that the MAC address of the Thunderbolt dock LAN port matches the VPro LAN port.
Intel vPro remote KVM is a hardware-level remote management feature that allows an IT administrator to take full control of a computer's keyboard, video, and mouse (KVM) as if they were physically sitting in front of it.
Requirements:
Intel vPRO Enterprise SKU CPU.
Software Required: MeshCommander / Intel Endpoint Management Assistant (EMA) / Third-Party IT Management Solutions.
An example of execution using MeshCommander is shown below.
Add a computer with the hostname and select “Digest / TLS” in the Auth / Security field.
Click Connect to connect to the host computer.
Go to “Remote Desktop” to connect and enter the Consent code that is displayed on the host computer.
Administer Secure Boot: opens a menu which manages the Secure Boot configuration of the system
Setup Utility: opens the BIOS setup utility
MEBx: opens the Intel AMT configuration utility
N/A
Advanced-> CPU Configuration
Performance Core
Read Only
Displays L1 Data Cache, L1 Instruction Cache, L2 Cache, and L3 Cache sizes.
N/A
N/A
Advanced-> CPU Configuration
ID, Brand String, VMX, SMX/TXT, TXT Crash Code, TXT SPAD, Boot Guard Status, Boot Guard ACM Policy Status, Boot Guard SACM Information
Read Only
Informational displays providing various identification details, technology statuses, and security-related information about the CPU.
N/A
N/A
Advanced-> CPU Configuration
CPU Flex Ratio Override
Option List
Enables or disables the ability to manually override the CPU's flexible ratio (multiplier). Used for overclocking or underclocking.
"Disabled, Enabled"
Disabled
Advanced-> CPU Configuration
CPU Flex Ratio Settings
Numeric Input
When 'CPU Flex Ratio Override' is enabled, allows setting the specific CPU ratio (multiplier).
"Minimum: 0, Maximum: 63, Step: 0"
Default: 20
Advanced-> CPU Configuration
Intel (VMX) Virtualization Technology
Option List
Enables or disables Intel Virtualization Technology (VT-x), required for running virtual machines.
"Disabled, Enabled"
Enabled
Advanced-> CPU Configuration
AVX
Option List
Enables or disables the Intel Advanced Vector Extensions (AVX) instruction set.
"Disabled, Enabled"
Enabled
Advanced-> CPU Configuration
Active Performance-cores
Option List
Allows users to select the number of active Performance-cores (P-cores).
"Various (e.g., All, 1, 2,..., 31)"
All
Advanced-> CPU Configuration
Active Efficient-cores
Option List
Allows users to select the number of active Efficient-cores.
"Various (e.g., All, 1, 2,..., 31)"
All
Advanced-> CPU Configuration
Active SOC-North Efficient-cores
Option List
Allows users to select the number of active SOC-North Efficient-cores.
"Various (e.g., All, 1, 2,..., 31)"
All
Advanced-> CPU Configuration
Hyper-Threading
Option List
Enables or disables Intel Hyper-Threading Technology.
"Disabled, Enabled"
Enabled
Advanced-> CPU Configuration
BIST
Option List
Enables or disables the Built-In Self-Test (BIST) for the CPU.
"Disabled, Enabled"
Disabled
Advanced-> CPU Configuration
AP threads Idle Manner
Option List
Configures how Application Processor (AP) threads behave when idle.
"HALT Loop, MWAIT Loop (Default), RUN Loop"
MWAIT Loop
Advanced-> CPU Configuration
AES
Option List
Enables or disables Intel Advanced Encryption Standard (AES) New Instructions.
"Disabled, Enabled"
Enabled
Advanced-> CPU Configuration
MachineCheck
Option List
Enables or disables the Machine Check Architecture (MCA) feature.
"Disabled, Enabled"
Enabled
Advanced-> CPU Configuration
MonitorMWait
Option List
Enables or disables the MONITOR/MWAIT instructions for managing CPU idle states.
"Disabled, Enabled"
Enabled
Advanced-> CPU Configuration
Total Memory Encryption
Option List
Enables or disables Total Memory Encryption (TME).
"Disabled, Enabled"
Disabled
Advanced-> CPU Configuration
X2APIC Enable
Option List
Enables or disables X2APIC mode for handling interrupts in systems with many logical processors.
"Disabled, Enabled"
Enabled
Enabled
N/A
Enabled
Advanced-> USB Configuration
USB Legacy SMI bit Clean
Options List
A low-level setting related to legacy USB behavior. Controls a System Management Interrupt (SMI) bit.
"Disabled, Enabled"
Disabled
Disabled
Default mode: 5V.
Fan Control
Fan Hat Control: Default mode is Thermal Cruise.
PCIe Riser Fan Control: Default mode is Thermal Cruise.
Hardware Monitor
Temperature:
Rear_Temp: Power Input Entrance area temperature.
Riser_Temp: Riser card temperature.
Front_Temp: Remote Power Button Area temperature.
Voltage:
VINPUT: Input voltage.
VCELL: RTC battery voltage.
Fan Speed:
Fan_HAT_FAN_RPM
PCIe_Riser_Fan_RPM
Watch-Dog Timer
The OS built-in driver refreshes the Watch-Dog Timer periodically. If the system hangs, the driver stops refreshing the WDT. The expiration of the timer will trigger a hardware reset to reboot the system.
The WDT length range is 1 to 255 minutes.
Always Off: Turn off WDT function.
Always On: Turn on WDT function.
Timeout value in sec / min
Suspended at BIOS Setup: Turn on WDT except in the BIOS setup menu.
Enabled
Advanced-> Power & Performance
Intel Speed Shift Technology Interrupt
Option List
Enables or disables interrupt control for Intel Speed Shift Technology, which dynamically adjusts CPU frequency and voltage.
"Disabled, Enabled"
Enabled
Intrusion Detect (requires a DIO expansion card): If enabled, the following actions can be taken when intrusion is detected:
Perform Power Cycle - Forced power-off and on
Power Button Emulation - Mimics a power button press
No Action
SATA/SSD S.M.A.R.T. Monitoring and Display: If enabled, it monitors the health of HDDs/SSDs for predictive failures, displaying a warning during startup if any critical S.M.A.R.T. attribute indicates a problem.
Startup Timer (Unit: Sec): [10]
Soft Off Timer (Unit: Sec): [10]
Hard Off Timer (Unit: Sec): [30]
Low Voltage Timer (Unit: Sec): [300]
Shutdown Voltage Integer (Unit: Volt): [10]
Shutdown Voltage Decimal (Unit: 0.1 Volt): [5]
Startup Timer: The number of seconds the ignition input must be stable before the system powers on, or input voltage must recover from low-voltage shutdown before powering on.
Soft Off Timer: The number of seconds until a virtual power button shutdown event is triggered.
Hard Off timer: The number of seconds until the system is forced to power down, beginning only after the soft-off or low-voltage timer expires.
Low Voltage Timer: The number of seconds the input voltage can be lower than the shutdown threshold before a virtual power button shutdown event.
Shutdown Voltage Integer: Integer part of the low-voltage shutdown threshold. The minimum recommended value is 10.5 V.
Shutdown Voltage Decimal: Decimal part of the low-voltage shutdown threshold.
Disabled
1.1
Advanced-> Security
TPM Availability
Option List
When Hidden, doesn’t expose the TPM to the OS.
"Available, Hidden"
Available
Advanced-> Security
TPM Operation
Option List
TPM2 State Operation Options.
"No Operation (default), Enable, SetPCRBanks (Algorithm), LogAllDigests, SetPPRequiredForClear_True, SetPPRequiredForClear_False, SetPPRequiredForTurnOn_False, SetPPRequiredForTurnOn_True, SetPPRequiredForTurnOff_False, SetPPRequiredForTurnOff_True, SetPPRequiredForChangePCRs_False, SetPPRequiredForChangePCRs_True, SetPPRequiredForChangeEPS_False, SetPPRequiredForChangeEPS_True"
No Operation
Advanced-> Security
Clear TPM
Option List
Remove all TPM context associated with a specific owner.
"[ ], [ X ]"
"[ ]"
Advanced-> Security
Set Supervisor Password
Alphanumeric Entry
Entry for supervisor password to lock specific settings.
"[ ], [ X ]"
"[ ]"
Enabled
Advanced-> Power
Auto Wake on S5
Option List
Auto wake on S5, by day of the month or fixed time of every day.
"Disabled, By Every Day, By Day of Month"
Disabled
Advanced-> Power
S5 Long Run Test
Option List
Forces to enable RTC S5 wake up, even if the OS disables it.
"Disabled, Enabled"
Disabled
Enabled
Advanced-> Boot
Quiet Boot
Option List
Disables or enables booting in Text Mode.
"Disabled, Enabled"
Enabled
Advanced-> Boot
Network Stack
Option List
Enables or Disables the onboard NICs before UEFI handoff.
"Disabled, Enabled"
Enabled
Advanced-> Boot
PXE Boot Capability
Option List
Sets the PXE Boot mode. Note: This setting is unavailable unless Network Stack is Enabled.
"Disabled, UEFI: IPv4, UEFI: IPv6, UEFI: IPv4/IPv6"
Disabled
Advanced-> Boot
Power Up In Standby Support
Option List
Enables or Disables Native Active State Power Management (ASPM).
"Enabled, Disabled"
Disabled
Advanced-> Boot
Storage PCI Option ROM Access Right support
Option List
Disable or enable storage PCI option ROM Access Right.
"Enabled, Disabled"
Enabled
Advanced-> Boot
ESATA Drive Boot Access Right Support
Option List
Disable or enable ESATA drive boot Access Right.
"Enabled, Disabled"
Enabled
Advanced-> Boot
Add Boot Options
Option List
Determines how new boot options are added into boot order.
"First, Last, Auto"
Auto
Advanced-> Boot
ACPI Selection
Option List
Selects booting to ACPI Version.
"ACPI3.0, ACPI4.0, ACPI5.0 ACPI6.0, ACPI6.1, ACPI6.2, ACPI6.3, ACPI6.4, ACPI6.5"
ACPI 6.3
Advanced-> Boot
USB Boot
Option List
Disables or enables booting to USB Boot Devices.
"Enabled, Disabled"
Enabled
Advanced-> Boot
UEFI OS Fast Boot
Numeric Entry
Enables or Disables Fast Boot mode. When enabled, the BIOS will not initialize the keyboard.
"Enabled, Disabled"
Disabled
Advanced-> Boot
Timeout
Option List
The number of seconds the firmware will wait before booting the default selection.
0~10
3
Advanced-> Boot
Automatic Failover
Option List
If enabled, failure of the boot device will result in an attempt to boot from the next device in boot order.
"Enabled, Disabled"
Enabled
Advanced-> Boot
Group Boot Options
Option List
Enables or disabled the grouping of boot options.
"Grouped, Non-Grouped"
Grouped
Advanced-> Boot
Sync Order
Option List
Disables or sets to Sync Boot Order or Sync Boot Device Type Order.
"Disabled, Sync Boot Order, Sync Boot Device Type Order"
Disabled
Advanced-> Boot
Adjust Non-BIOS Boot Options
Option List
When enabled, the position of Non-BIOS created boot options will be adjusted to follow the boot options position policy.
"Disabled, Enabled"
Enabled
Advanced-> Boot
Group Auto Boot Order
Option List
When enabled, keeps the boot option order of each group in “Auto” position policy.
"Disabled, Enabled"
Disabled
Advanced-> Boot
Device Type in Boot Manager
Option List
When enabled, shows the boot device type label in the boot manager.
"Disabled, Enabled"
Enabled
Advanced-> Boot
Boot Device Type Order
Option List
Allows changing the boot device type order.
"Hard Disk Drive [X]", "CD/DVD-ROM Drive [X]", "USB [X]", "Network [X]", "Others [X]"
Shown as above
Advanced-> Boot
Hard Disk Drive
Option List
Allows changing the Hard Drive Boot Order.
"[Hard Disk Drive] [X]"
"[X]"
Advanced-> Boot
Others
Option List
Allows changing Other Device Boot Order.
"EFI Internal Shell [X]"
"EFI Internal
Shell [X]"
The system will reboot and reset to default.
Load Custom Defaults: loads a previously saved custom configuration
Save Custom Defaults: saves the current configuration so it can be loaded later
Discard Changes: restores the current configuration to its original state
Navigate to Intel® AMT Configuration and select Network Access State and choose Network Active.
Press F10 to Save and Exit, then navigate to Setup Utility > Advanced > PCH-FW Configuration to check the ME Firmware Version to confirm the ME is installed.
The system status will be displayed in the local WebUI.
For the username enter admin and for the password enter the password configured in the BIOS MEBX tab, then select Sign in.
A WebUI will appear. Ensure the IP address shown is the same as the DUT IP address (VPRO system).
Select Remote Control to control the Power Off, Cycle power off and on, Reset, and Graceful shutdown of the DUT system.
Advanced-> CPU Configuration
Efficient-core Information
Read Only
Displays L1 Data Cache, L1 Instruction Cache, L2 Cache, and L3 Cache sizes.
Advanced-> Chipset Configuration
Platform Trust Technology
Options List
Enables or disables Intel Platform Trust Technology (PTT), a firmware-based implementation of a Trusted Platform Module (TPM).
Advanced-> System Agent (SA) Configuration
Graphics Configuration, TCSS Setup Menu, VMD Setup Menu, VT-d Setup Menu, GNA Device, CRID Support, IPU Device, NPU Device
Various Options
Refer to Section 5.5 - Advanced > System Agent (SA) Configuration -> Graphics Configuration
Advanced->PCH-IO Configuration
SATA Configuration, USB Configuration, Security Configuration, HD Audio Configuration, THC Configuration, SerialIO Configuration, ISH configuration, Thermal Throttling Control, PMC Configuration
Various Options
SATA Configuration: Configures SATA ports for storage devices. USB Configuration: Manages the behavior of USB controllers and ports.
Advanced->PCH-FW Configuration
ME Firmware Version, ME Firmware Mode, ME Firmware SKu, ME Firmware Status 1-6, ME State, Manageability Features States, AMT BIOS Features, AMT Configuration, ME Unconfig on RTC Clear, Core BIOS Done Message, CSE Data Resilience Support, FDO Shipment State Override, Firmware Update Configuration, FIPS Configuration, Unique Platform ID Configuration, ME Debug Configuration, Anti-Rollback SVn Configuration, OEM Key Revocation Configuration, Extend CSME Measurement to TPM-PCR
Various Options
PCH-FW configuration: Configure Management Engine Technology Parameters. Console redirection configuration: Configures the redirection of console output to a serial port. Refer to Section 5.3.
Advanced-> SATA Configuration
Serial ATA Port 0-7
Read-Only
These entries represent the physical SATA ports available. They are informational and not directly configurable at this level.
Advanced -> USB Configuration
USB BIOS Support
Options List
Enables or disables fundamental USB support within the BIOS, allowing USB keyboards and mice to function before the OS loads.
Advanced-> PCIe Configuration
Port8xh Decode, Compliance Test Mode, PCIE Clock, SOC Configuration, PCI Express Root Port PXPA1, PCI Express Root Port PXPA2, PCI Express Root Port PXPA3, PCI Express Root Port PXPA4, PCI Express Root Port PXPB1, PCI Express Root Port PXPB2, PCI Express Root Port PXPB3, PCI Express Root Port PXPB4, PCI Express Root Port PXPC, IOE Configuration, PCI Express Root Port PXPD, PCI Express Root Port PXPE, PCI Express Root Port PXPF
Various Options
PCIe Root Port settings
Advanced-> Console Redirection Configuration
Console Serial Redirect
Option List
Console Redirection Settings.
Advanced->SIO NCT6126D
UART Port 1 Configuration, UART Port 2 Configuration, UART Port 3 Configuration, UART Port 4 Configuration, Fan Control, Hardware Monitor, Watchdog Timer
Various Options
Contains settings specific to the Super I/O (SIO) controller, often responsible for managing legacy ports and hardware monitoring. Refer to Section 5.4 - Advanced > NCt6162D
Advanced-> Power & Performance
Overclocking Lock
Option List
Locks or unlocks the CPU's overclocking features to prevent accidental changes.
Advanced->OnLogic Feature Configuration
Pseudo G3, Retimer Compliance Mode, LAN Controller 1 & 2, LAN Controller 3 & 4, Intrusion Detection
Various Options
Refer to Section 5.2 - Advanced > OnLogic Feature Configuration
Advanced->Automotive Ignition
Automotive Ignition
Various Options
Refer to Section 5.2 - Advanced > Automotive Ignition (Only for Karbon 520)
IGNITION PIN
12V ~ 48V (constant DC)
OPEN
Advanced-> Expert Mode
Expert Mode
Option List
Enables or disables the display of advanced BIOS configuration options. Enabling it exposes additional, technical parameters.
Advanced-> Security
TrEE Protocol Version
Option List
Trusted Execution Environment EFI Protocol version.
Advanced-> Power
Wake On PME
Option List
Determines the action taken when the system power is off and a PCI Power Management Enable wake up event occurs.
Advanced-> Boot
Quick Boot
Option List
Allows InsydeH2O to skip certain tests while booting, decreasing boot time.
N/A
"Enabled, Disabled"
N/A
N/A
"Disabled, Enabled"
"Disabled, Enabled"
"Disabled, Enabled"
"1.1, 1.0"
"Disabled, Enabled"
"Disabled, Enabled"
V3.3: 3.3V rail voltage.
VRTC: RTC voltage.
V1.25: 1.25V rail voltage.