DE3125 - Computing AOPEN - Free user manual and instructions

Product Type	Desktop PC
Brand	AOpen
Model	DE3125
Dimensions (W x D x H)	200 x 200 x 50 mm
Weight	1.5 kg
Processor	Intel Celeron or AMD equivalent
Memory (RAM)	2 GB (upgradable to 4 GB)
Storage	80 GB HDD
Operating System	Windows XP or Linux
Power Supply	External AC adapter, 65W
Input Voltage	100-240V AC, 50-60Hz
Connectivity	USB 2.0, VGA, Ethernet, audio jacks
Wireless	Optional Wi-Fi via USB adapter
Main Functions	Office applications, web browsing, multimedia playback
Maintenance	Clean with a soft, dry cloth; avoid solvents
Safety	Keep away from liquids; unplug before cleaning
Spare Parts	RAM modules, 2.5-inch SATA HDD/SSD
Repairability	User-accessible RAM and storage bay
Certifications	CE, FCC
Operating Temperature	0°C to 35°C

Frequently Asked Questions - DE3125 AOPEN

How do I connect the DE3125 to a monitor?

Use the VGA port on the back of the computer. Connect one end of a VGA cable to the computer and the other to your monitor. Ensure the monitor is set to the correct input.

Can I upgrade the RAM in the AOpen DE3125?

Yes, the DE3125 supports up to 4 GB of DDR2 RAM. Open the case, locate the RAM slots, and insert compatible modules.

How do I replace the hard drive?

Turn off the computer and unplug it. Remove the case cover. The hard drive is a 2.5-inch SATA drive. Disconnect the cable, remove screws, and replace with a compatible drive.

Does the DE3125 support Wi-Fi?

The DE3125 does not have built-in Wi-Fi. You can add a USB Wi-Fi adapter for wireless connectivity.

What operating system can I install?

The DE3125 is compatible with Windows XP, Windows 7 (32-bit), and various Linux distributions like Ubuntu (32-bit).

How do I clean the DE3125?

Use a soft, dry cloth to wipe the exterior. Do not use liquids or sprays. For internal dust, use compressed air carefully.

What is the power consumption?

The DE3125 uses a 65W external power adapter. Typical power consumption is around 30-40W under normal use.

Can I connect multiple monitors?

The DE3125 has only one VGA output. For multiple monitors, you would need a USB-to-VGA adapter.

Why is my DE3125 not turning on?

Check the power adapter connection and ensure the power outlet works. Try removing all peripherals. If still no power, the power adapter may need replacement.

How do I reset the BIOS?

Turn off the computer, unplug it, and open the case. Locate the CMOS battery on the motherboard. Remove it for 30 seconds, then reinstall. This resets BIOS settings.

USER MANUAL DE3125 AOPEN

Exterior view of a black industrial electronic device with ventilation grilles and control buttons (no text or symbols visible)

Disposal Instruction (US)

For the better protection of our Earth, please refrain from disposing of this electronic device in the municipal trash bin. To minimize pollution and ensure the utmost protection of the global environment, please kindly consider recycling the product. For more information about the collection and recycling of Waste Electrical and Electronic Equipment (WEEE), please visit our homepage at www.aopen.com under "Green Products".

廃棄上の指示

Instruction de Disposition (French)

Copyright of this publication belongs to AOpen Inc. AOpen reserves the right to change the content of this publication without obligation to notify any party of such changes or revisions. No part of this publication may be reproduced, transcribed, transmitted, translated into any language, or stored in a retrieval system, in any form or by any means, electronically, mechanically,gq or optically, without the prior written permission of this company.

■ Disclaimer

AOpen makes no warranties or representations, either expressed or implied, with respect to the content herein and specifically disclaims any warranties of merchantability or fitness for any particular purpose.

The AOpen and AOpen logos used herein are registered trademarks of AOpen Inc.

All other brand names and trademarks mentioned in this publication are owned by their respective owners.

Copyright © 2023 by AOpen Inc.

All rights reserved.

■ FCC notice

This device has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

■ Notice: Canadian users

This Class B digital apparatus complies with Canadian ICES-003.

■ Safety Instructions

1. Please read these safety instructions carefully.

2. Please keep this User Guide for later reference.

3. Before cleaning, disconnect this equipment from the AC adapter. Use a soft, moist cloth for cleaning. Do not use liquid or sprayed detergent.

4. Ensure the equipment is connected to the power source with the correct voltage, frequency, and ampere.

5. Pay attention to all cautions and warnings on the equipment.

6. Never pour any liquid into unit openings; doing so could cause fire or electrical shock.

7. For safety reasons, never open the equipment. Only qualified service personnel are authorized to perform the servicing.

8. If any of the following situations arise, promptly have the equipment checked by a qualified service technician:

a. Liquid has leaked into the equipment.
b. The equipment has been exposed to moisture.
c. The equipment does not function properly or cannot be operated according to the user guide.
d. The equipment was dropped and damaged.
e. There are obvious signs of breakage on the equipment.

1. Caution on use of battery: Use the battery recommended by the manufacturer or the same type of battery installed by the manufacturer. Using an incorrect battery may cause explosion or fire hazard. Recycle or discard used batteries according to the manufacturer's instruction or your local authority.

1. Ambient operation temperature: 0°C to 35°C
2. Risk of overheating!

- Do not install DE3125 in a-closed space. Ensure the ventilation holes on the top have at least 1 to 2 inches (2 to 5 cm) of clearance for proper airflow and prevent obstruction by other objects.

Maintain at least 5cm (2 inches) of top clearance for ventilation.

Do not place the operating device in an enclosed space.

I/O of DE3125

Front I/O Rear I/O

- Packing List

DE3125

• 1 x DE3125 system unit
• 4 x VESA mount screws
  • 1 x Caution label for heatsink

• 1 x 40W adapter and power cord
- 1 x Insert page for driver download website

■ Product Specifications

CPU Intel® Alder Lake-N Dual Core CPU Quad/Dual core processor (TDP<=6W)
Storage M.2 2280 SSD
Memory Signal Band DDR4 SO-DIMM x 1 slot, support 2666/3200 MAX. up to 16GB
Graphics Intel UHD Graphics for 12th Gen Intel Processors
Expansion Slot M.2 2230 x 1(key E for WiFi), M.2 2280 x 1(key M for SSD)
Audio Realtek ALC897 HD Audio CODEC on-Board.
LAN Maxlinear GIGA LAN x 1
Front Panel IO	Power Button x 1 (with Power/HDD indicator), System Error LED x 1, Combo Audio Jack x 1, BIOS Recovery Button x 1
Rear Panel IO DC 19V Jack x 1, HDMI 2.0 x 2, RJ45 LAN x 1, USB 3.2 x 1, USB Type C x 1,USB2.0 x 2
Adapter DELTA ADP-40KD BB 40W (19VDC, 2.1A) AC Power Adapter
Input Voltage	AC 100 ~ 240V

■ Chassis Dimension

DE3125 Dimension (unit: mm[inch])

AOPEN Smart function provides several key features as shown below:

1. System Error LED:

This LED indicator illuminates with different colors to display the status of essential devices during the boot process. When an error occurs, the color of the LED can help determine the current issue. This feature aids in speeding up debugging and repair process.

During the BIOS POST initialization, the LED color indicates the following:

Step 1. Memory Initialization >> Blue color

Step 2. Display Device Initialization >> Green color

Step 3. Boot device Initialization >> Blue + Green color

Step 4. BIOS Handoff to Operating System >> LED Off (Default after boot)

1. BIOS Recovery:

In case of BIOS corruption, the BIOS Recovery feature allows you to reload the BIOS and successfully boot your system again through the following steps.

Step 1. Prepare a USB flash drive (formatted with FAT32) and BIOS bin file (\FPT\TEAxxx.bin). Rename the BIOS file name to AOPEN.bin and copy it to the root directory of the USB flash drive.

Step 2. Connect the AC adapter to the DE system and insert the USB flash drive into the Smart function USB port.

Step 3. Insert a paper clip to press the BIOS RECOVERY BUTTON on the front panel.

Step 4. The system power LED will illuminate and the System Error LED will start flashing green to indicate that the BIOS update is in progress. The BIOS update process takes around 7 minutes.

Step 5. The system will automatically reboot when the BIOS update is completed.

BIOS Recovery button

P.S. BIOS recovery will clear data in the DMI table and Mac address. Therefore, please contact your system integrator before executing the BIOS recovery process.

1. USB Keyboard to Power On/Off/Reset PC system:

The Smart function USB port offers the capability to use a USB Keyboard to for powering On/Off/Reset of the PC system through specific keyboard shortcuts as outlined below. To utilize this feature, insert an USB Keyboard into the Smart function USB port and follow the indicated keyboard shortcuts. Please note that this function is disabled by default in the OS; if you wish to use it under the OS, you can enable it through the BIOS menu.

Keyboard shortcuts:

Power On: ALT+P

Power Off: ALT+P+O

Reset: ALT+R+T

Insert USB Keyboard to this USB portInsert

Back panel of a computer interface showing ports and connectors (no readable text or symbols)

VESA Mount (75mm x 75mm) installation Schematic Diagram (Screws Included)

Ver: DE3125-MU-06052023