ExpertCenter D3 Mini Tower D340MC - Desktop computer ASUS - Free user manual and instructions
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| Product Type | Desktop Computer |
| Brand | ASUS |
| Model | ExpertCenter D3 Mini Tower D340MC |
| Form Factor | Mini Tower |
| Processor | Intel Core i5-9400 (6 cores, up to 4.1 GHz) |
| Memory | 8 GB DDR4-2666 (expandable up to 64 GB) |
| Storage | 256 GB M.2 NVMe SSD + 1 TB 7200 RPM HDD |
| Graphics | Integrated Intel UHD Graphics 630 |
| Operating System | Windows 10 Pro |
| Dimensions (W x D x H) | 6.9 x 13.5 x 14.5 inches (17.5 x 34.3 x 36.8 cm) |
| Weight | ~12.6 lbs (5.7 kg) |
| Power Supply | 300 W 80+ Bronze |
| Front Ports | 2x USB 3.2 Gen 1, 1x USB-C, 1x Mic, 1x Headphone |
| Rear Ports | 4x USB 3.2 Gen 1, 2x USB 2.0, 1x HDMI, 1x VGA, 1x DVI-D, 1x RJ-45, 3x Audio Jacks |
| Connectivity | 10/100/1000 Mbps Ethernet, 802.11ac Wi-Fi, Bluetooth 5.0 |
| Expansion Slots | 1x PCIe x16, 1x PCIe x1, 2x M.2, 2x 3.5" drive bay, 2x 2.5" drive bay |
| Security | TPM 2.0, Kensington lock, chassis intrusion detection |
| Cooling | 1x front fan, 1x rear fan, CPU heatsink with fan |
| Included Accessories | Power cord, keyboard, mouse, driver DVD, user manual |
| Warranty | 3 years limited warranty |
Frequently Asked Questions - ExpertCenter D3 Mini Tower D340MC ASUS
How do I set up the ASUS ExpertCenter D3 Mini Tower D340MC for the first time?
Connect the power cord, monitor, keyboard, and mouse. Press the power button on the front panel. Follow the Windows setup wizard to configure language, network, and user account.
How can I access the BIOS settings?
Restart the computer and repeatedly press F2 or Del key during startup until the BIOS screen appears.
Is it possible to upgrade the RAM?
Yes, the system supports up to 64 GB DDR4-2666 in two DIMM slots. Open the side panel and install modules in the empty slots. Ensure they are compatible.
How do I install an additional SSD or HDD?
Turn off the PC and unplug power. Open the side panel. Use empty drive bays or M.2 slots. Secure the drive, connect SATA and power cables (if needed), and close the panel.
What should I do if the computer does not turn on?
Check the power cable connection and ensure the power switch at the back of the PSU is on. Try a different outlet. If still off, inspect the motherboard power connectors.
How can I clean the interior of the desktop?
Unplug the power and use compressed air to blow dust from fans, heat sinks, and components. Avoid using vacuum cleaners or liquid cleaners. Clean every 3-6 months.
The computer is beeping during startup. What does it mean?
Beep codes indicate hardware issues. One short beep usually means normal POST. Multiple beeps may point to RAM or graphics problems. Refer to the user manual for specific codes.
Can I install a dedicated graphics card?
Yes, the PCIe x16 slot supports a low-profile or standard graphics card. Ensure the power supply is sufficient (300W) and check physical clearance inside the case.
How do I reset the BIOS to default settings?
Enter BIOS setup by pressing F2/Del. Look for 'Load Optimized Defaults' or press F9. Save and exit (F10). Alternatively, remove the CMOS battery for 30 seconds.
Where can I download the latest drivers?
Visit the ASUS support website: https://www.asus.com/support/. Enter model 'D340MC' and download drivers for your operating system.
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