Maxtang VHEHL-30 User manual

VHEHL-30 Fanless Mini PC

Copyright
© 2022 Shenzhen Maxtang Computer Co., Ltd. All rights reserved. No part of this publication may be reproduced,
copied, stored in a retrieval system, translated into any language, or transmitted in any form or by any means,
electronic, mechanical, photocopying, or otherwise, without the prior written consent of Shenzhen Maxtang
Computer Co., Ltd (hereinafter referred to as “Maxtang”).
Disclaimer
Maxtang reserves the right to make changes and improvements to the products described in this document without
prior notice. Every effort has been made to ensure the information in the document is correct; however, Maxtang
does not guarantee this document is error-free.
Maxtang assumes no liability for incidental or consequential damages arising from misapplication or inability to use
the product or the information contained herein, nor for any infringements of rights of third parties, which may result
from its use.
Trademarks
All the trademarks, registrations, and brands mentioned herein are used for identification purposes only and may be
trademarks and/or registered trademarks of their respective owners.

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VHEHL-30
User Manual
(Version 2.0)
Version:
NO.
Description
Issue Date:
V2.0
Initial Version
2022/02/08

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Contents
Chapter 1 Product Introduction ......................................................................................................4
1.1 Brief Introduction............................................................................................................4
1.2 Parameters ......................................................................................................................4
1.3 Connector Diagram .........................................................................................................5
1.4 I/O Interface....................................................................................................................6
Chapter 2 Hardware............................................................................7
2.1 Installations.....................................................................................................................7
2.2 Jumper Setting ................................................................................................................7
2.3 Memory Slots..................................................................................................................7
2.4 Display Interfaces............................................................................................................8
2.5 Storage...................................................................................................................................8
2.6 Expansion Slot........................................................................................................................8
2.7 USB Interface .........................................................................................................................8
2.8 LAN.........................................................................................................................................8
2.9 COM .......................................................................................................................................8
2.10 Board Power Supply.............................................................................................................9
2.11 CPU Fan Socket ....................................................................................................................9
2.12 CMOS Clearance/Retention.................................................................................................9
Chapter 3 BIOS Setup .......................................................................10
3.1 Entering the BIOS.................................................................................................................10
3.2 Main Setup (BIOS info, Date, Time）..................................................................................10
3.3 Advanced Settings................................................................................................................11
3.3.1 CPU-Power & Performance........................................................................................11
3.3.2.1 CPU-Power Management Control...........................................................................12
3.3.2.2 GT-Power Management Control.............................................................................13
3.3.3 Thermal Configuration...............................................................................................13
3.3.4 ACPI Settings ..............................................................................................................14
3.3.5 Super IO Configuration...............................................................................................15
3.3.6 Hardware Monitor .....................................................................................................16
3.3.7 Watch Dog Configuration...........................................................................................17
3.3.8 S5 RTC Wake Settings.................................................................................................17
3.3.9 USB Configuration......................................................................................................18
3.3.10 Network Stack Configuration...................................................................................19
3.3.11 NVME Configuration ................................................................................................19
3.4 Chipset .................................................................................................................................20
3.4.1 State After G3.............................................................................................................21

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3.5 Security.................................................................................................................................21
3.6 Boot......................................................................................................................................22
3.7 Save & Exit............................................................................................................................23

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Chapter 1 Product Introduction
1.1 Brief Introduction
The VHEHL-30 is a compact fanless mini pc based on the Intel Elkhart Lake platform and features a small
form factor, low power consumption, and high performance.
1.2 Parameters
CPU: Intel® Celeron® Processor J6412, 4Cores 4Threads, Base Frequency: 2.00GHz, Burst Frequency: 2.60 GHz,
TDP 10W
Memory: 2x SO-DIMM DDR4-3200, support dual-channel, maximum capacity 32GB
GPU: Integrated Graphics based on CPU, display via 3x HDMI2.0
Storage: 1 x M.2 Key B slot for 2242/2280 SATA SSD or 4G module, 1x M.2 Key M slot for 2280
NVMe(x2)/SATA SSD
USB: 2x USB3.2 Gen 2, 4x USB2.0, 1x Type-C (USB3.2 Gen 2)
Ethernet: 2x Gigabyte Network Controllers on-board (RTL8111H)
Audio: High-Definition Audio Codec, supports Line-out, Mic-in
Serial I/O: 1x RS232 COM (RS485/RS424 optional)
Other I/O: 1x M.2_Key E for 2230 Wi-Fi & BT
Dimension: 191mm x 151mm x 34 mm
Power: 12V DC-in (12-30V optional)
Working Temperature: -20℃~60℃

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1.3 Connector Diagram

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1.4 I/O Interface

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Chapter 2 Hardware
2.1 Installations
Please refer to the following steps for installations:
1. Read the user manual carefully to make sure all the adjustments on the VHEHL-30 are correct.
2. Installing the Memory:
⚫Press the ejector tab of the memory slot outwards with your fingertips.
⚫Hold the memory module and align the key to the module with that on the memory slot.
⚫Gently push the module into the slot until the ejector levers return completely to the closed
position, holding the module in place when the module touches the bottom of the slot. To
remove the module, press the ejector levers outwards to unseat the module.
3. Installing the expansion cards:
⚫Locate the expansion slots and remove the screw, insert the cards into the slot at a 45-degree
angle then attach the screw to the expansion cards, gently press down on it then install the
screw back.
4. Connect all signal wires, cables, panel control wiring, and power supplies.
5. Start the computer and complete the setup of the BIOS program.
The board's components are integrated circuits and can easily be damaged by Electrostatic Discharge or
ESD; therefore, please follow the instructions:
⚫Hold the board's edge when handing, and do not touch onboard pins, components, or plug
sockets.
⚫When touching integrated circuit components (such as CPU, RAM, etc.), please wear an
anti-static wrist strap/glove to avoid electrostatic discharge damage to the board or other
sensitive components.
⚫Before installing the integrated circuits/sensitive components, place the sensitive components
in anti-static bags to keep them safe from ESD.
⚫Please make sure the power switch is OFF before plugging the power plug.
2.2 Jumper Setting
Please configure the jumpers according to your requirements before installing the hardware.
How to identify the first header of jumpers and pins: Observe the mark beside the jumper or pins and
find the header marked by “1” or bold line or triangular symbol. Or observe the rear panel and the header
with a square solder pad is the first header.
2.3 Memory Slots
The board provides two SO-DIMM DDR4-3200 slots and supports dual-channel; maximum capacity of
32GB.
Attention: Make sure to hold the memory module and align the key to the module with that on the
memory slot. While choosing a memory module, please make sure the module matches the board’s
specifications.

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2.4 Display Interfaces
The board features Integrated Intel UHD graphics, supports 3xHDMI2.0 standard interface, and 4K
support at 60Hz.
2.5 Storage
1x M.2 Key M for 2280 NVMe(x2)/SATA SSD; 1x M.2 Key B for 2242/2280 SATA SSD or 4G module with
standard Micro-SIM slot.
2.6 Expansion Slot
The board provides 1xM.2 Key_E slot for 2230 Wi-Fi & Bluetooth.
2.7 USB Interface
The board supports 2x USB3.2 Gen2 and 4x USB2.0, 1x Type-C(USB3.2 Gen 2).
2.8 LAN
The board features 2xRJ45 interfaces with high-speed Realtek 8111H Gigabit network controllers,
supports Magic packet wake-up, and the LAN1 supports PXE network boot.
LED Status Indicators:
LI_LED Status (Green)
Function
ACT_LED Status (Orange)
Function
Always on
Network Connected
Blinking
Data transfer
2.9 COM
The board provides one RS232 DB-9 serial port (RS485/RS422 optional).
COM DB-9 (Screen printing:COM1)
Pin
RS232
Interface
1
DCD#
2
RXD
3
TXD
4
DTR#
5
GND
6
DSR#
7
RTS#
8
CTS#
9
RI#
RS485/RS422 Optional
Pin
RS232
RS485
RS422
1
DCD#
DATA-
TX-
2
RXD
DATA+
TX+
3
TXD
(NC)
RX+
4
DTR#
(NC)
RX-
5
GND
GND
GND
6
DSR#
(NC)
(NC)

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7
RTS#
(NC)
(NC)
8
CTS#
(NC)
(NC)
9
RI#
(NC)
(NC)
2.10 Board Power Supply
The board supports 12V DC-in and 12V-30V optional for power supply.
2.11 CPU Fan Socket
The board provides a CPU fan socket for cooling. Default power voltage: 5V.
CPU_FAN: (Screen printing: CPUFAN)
Pin
Signal
Interface
1
VCC
2
GND
3
TAC
4
CTL
2.12 CMOS Clearance/Retention
CMOS is powered by onboard button batteries. Clearing CMOS will permanently remove the previous
system settings and restore the board system to original settings (factory settings).
Step 1: Turn off the PC and disconnect the power adapter.
Step 2: Press JCMOS for 10 seconds then disconnect.
Step 3: Restart the device, press the <DEL> button to enter the BIOS, load the optimal default value,
save, and exit the settings.
JCMOS (Screen Printing: JCMOS)
Setting
JCMOS
Close
Clear CMOS
Please do not clear COMS when the PC is connected to power in case board damages.

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Chapter 3 BIOS Setup
3.1 Entering the BIOS
1. Turn on the computer and press <Delete> entering the BIOS
2. After the computer is turned on, keep pressing F11, select enter Setup
3. BIOS Hotkeys:
F9: Restore to Factory setting.
F10: Save and Exit.
ESC: Exit
3.2 Main Setup (BIOS info, Date, Time）
When you enter the BIOS Setup utility the first things you will encounter is the Main Setup screen.
Shown below is the Main BIOS Setup screen. You can always return to the Main setup by selecting the Main
tab.
System Date: Sets the date. MM/DD/YY format.
System Time: Set the time. HH:MM: SS format.

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3.3 Advanced Settings
Select any of the items in the left frame of the screen. The advanced sections allow you to configure, improve
and set up system features according to the preference of the CPU Configuration. All Advanced BIOS Setup
options are described as follows.
3.3.1 CPU-Power & Performance
CPU-Power Management Control
GT-Power Management Control

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3.3.2.1 CPU-Power Management Control
Intel® Speedstep®(TM):
Enhanced Intel SpeedStep® Technology enables the operating system to control multiple frequencies and
voltage points for optimal performance and power efficiency.
Intel® Speed Shift Technology:
An energy-efficient frequency control method by the hardware rather than relying on OS control.
Processor decision is based on the different system constraints for example Workload demand, and thermal
limits while taking into consideration the minimum and maximum levels and activity window of performance
requested by the operating system. Default enabled.
Turbo Mode
The Turbo mode refers to Nehalem’s “Integrated Power Gate” power management technology, which
allows running off some cores and adding power to the others so that they run at a higher frequency. The
capacity of the entire CPU remains unchanged, and the efficiency of the CPU is optimized. Default enabled.
C states
Idle States (C-states) are used to save power when the processor is idle. C0 is the operational state,
meaning that the CPU is doing useful work 100% load. C1 is the first idle state, C2 the second, and so on,
where more power-saving actions are taken for numerically higher C-states. C1 to C3 cuts off the clock inside
the CPU, and C4 to C6 reduces the CPU voltage. Default enabled.
Enhanced C states
C1 to C3 cuts the clock inside the CPU. C4 and C6 mode reduces CPU voltage. Features two way
“Enhanced” mode, enable by default.

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3.3.2.2 GT-Power Management Control
Maximum GT frequency：
Maximum GT Frequency, Default max frequency.
Disable Turbo GT frequency：
Disable Turbo GT Frequency mode, Default disabled.
3.3.3 Thermal Configuration

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Enable All Thermal Functions
CPU Thermal Configuration:
Unlocks the temperature setting, the “Tcc Activation Offset” is the temperature adjustment option, the
highest temperature is 105°C. Change the temperature by minus the number of degrees you wish to change.
For example, minus 0(105-0) to set the temperature at 105°C, minus 20(105-20) to set the temperature at
85°C.
Platform Thermal Configuration
DPTF Configuration
3.3.4 ACPI Settings
Enable ACPI Auto Configuration
Enable or disable BIOS ACPI Auto Configuration.
Enable Hibernation
Enable or disable the ability to hibernate.
ACPI Sleep State
Select the highest ACPI sleep state the system will enter when the SUSPEND button is pressed.

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3.3.5 Super IO Configuration
Serial Port 1 Configuration
Serial Port: Enable or disable serial port (COM).
Device Setting (Read-only): Displays serial ports’ interrupt and location.
Change Setting: Change serial port settings and suggest setting “Auto” as default.

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3.3.6 Hardware Monitor
PC Health Status
The PC health status displays CPU temperature, system temperature, fan speed, and other relevant
voltage values. The above parameters have a certain range, and the system cannot run beyond these ranges.
⚫CPU Temperature
⚫System Temperature
⚫VCore: Core Voltage
⚫VDDQ: RAM Voltage
⚫+3.3V: 3.3V
⚫+5V: 5V

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3.3.7 Watch Dog Configuration
Watch Dog Configuration
WDT Timeout Mode select: Minute or Second
3.3.8 S5 RTC Wake Settings
Wake system From S5: timing boot settings, disabled by default.
Fixed Time: Select Fixed Time and the system will wake on the Hr: Min: Sec specified.
Dynamic Time: Select Dynamic Time and the system will wake on a dynamic time.

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3.3.9 USB Configuration
Legacy USB Support
Enable Legacy USB support. Disables legacy support if no USB devices are connected. Select enable will
keep USB devices available under UEFI’s support.
XHCI Hand-off
A workaround for OS without XHCI hand-off support. The XHCI ownership change should be claimed by
the USB XCHI driver.
USB Mass Storage Driver Support
Enable(default) or disable USB Mass Storage Driver Support.
USB transfer time-out
Time-out value for control, bulk, and interrupt transfers, default time:20 second.
Device reset time-out
USB mass storage device start unit command time-out, default time:20 second.
Device Power-up Delay
Maximum time the device will take before it properly reports itself to the host controller.