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Mini-PCASUS VivoMini UN42: review and testing

ASUS is constantly expanding its product range by a variety of multimedia devices, computer accessories, monitors, laptops and other components. In this review we will focus on the new mini-PC - ASUS VivoMini UN42 positioned as a compact solution with good capabilities. Primarily new product is offered to business users, but it does not mean that it is not suitable as a training system or a multimedia PC.

ASUS VivoMini UN42

Do note that this model can be supplied as a barebone-system or installed drive, RAM, and operating system. In our case, a mini-PC was preinstalled with Windows 8.1.

The specs: 




VivoMini UN42


Intel Celeron 2957U (2 x 1,4 GHz)


Intel Lynx Point-LP

Memory support

2 x DDR3L SO-DIMM-slots with 1600 MHz with memory support up to 16 GB

Installed memory

1 x Kingston ASU16D3LFS1KBG with capacity of 2 GB

Graphics adapter

Intel HD Graphics

Disk subsystem

1 х mSATA

Installed drive

1 х SK hynix HFS032G3AMNB-2200A AG with capacity of 32 GB

Optical drive



In-built (SD, SDHC, SDXC и MMC)

Expansion slots

1 х mini-PCIe (installed module Wi-Fi/Bluetooth)


4 x USB 3.0

1 х combined audio socket for headphones and microphone

1 х HDMI

1 х DisplayPort

1 x RJ45 (LAN)

1 x power socket

1 х lock Kensington




Audio coded

Conexant CX20752


Network adapter

10/100/1000 Мb/s (Realtek RTL8111GR)


mini-PCIe Wi-Fi/Bluetooth-module


802.11 a/b/g/n/ac


Bluetooth 4.0


Output parameters: 19 V DC at 3,42 А, 65 W

Input parameters: 100~240 V AC at 50/60 Hz


Wall or monitor mounting with the help of supplied VESA 75/100 mm

Case dimensions

131 x 131 x 42 mm


1 kg

Producer website


Product page

ASUS VivoMini UN42


ASUS VivoMini UN42


ASUS VivoMini UN42

The "heart" of this model is a dual-core processor Intel Celeron 2957U that allows you to handle up to two threads. It is based on 22nm microarchitecture Intel Haswell. Its base frequency is 1400 MHz at a voltage of 0.688 V. Since support Intel Turbo Boost Technology is absent, the speed cannot be dynamically increased. Also note the very low TDP of the processor, which does not exceed 15 W, which is important for a compact system.

ASUS VivoMini UN42

Here is a power-saving mode where the operating frequency is reduced to 800 MHz at a voltage of 0.678 V.

ASUS VivoMini UN42

The integrated memory controller provides support for modules DDR3L with frequency of up to 1600 MHz and a voltage of 1.35 V. They can operate in dual channel mode. The maximum capacity of memory is 16 GB.

ASUS VivoMini UN42


ASUS VivoMini UN42

ASUS VivoMini UN42 doesn’t have a discrete graphics card, so its video subsystem consists of an integrated graphics core Intel HD Graphics. It includes 10 unified shader pipelines, 2 texture units, and 2 blocks of rasterization. Basic GPU frequency is 200 MHz, and dynamic is 1000 MHz. Intel HD Graphics offers support for API DirectX 11.1, OpenCL, and DirectCompute 5.0.

ASUS VivoMini UN42

The motherboard model is presented by model ASUS UN42, based on chipset Intel Lynx Point-LP.

Package and content

ASUS VivoMini UN42

ASUS VivoMini UN42 comes in a rather large cardboard box decorated in a black color. Its design is very concise. On the front side there is only the name of the manufacturer and the company’s slogan.

ASUS VivoMini UN42

On the reverse side you can find the label with information about the mini-PC model, as well as its configuration. In our case it has 2 GB of RAM and SSD of 32 GB with the operating system Windows 8.1.

ASUS VivoMini UN42

Inside the box the computer is securely fixed using cardboard shapes and placed inside an antistatic package, which should prevent it from damage during transportation.

ASUS VivoMini UN42

Package of ASUS VivoMini UN42 includes:

  • VESA mount;
  • power supply;
  • User's Guide.


ASUS VivoMini UN42

The tested model is based on in a compact body with rounded corners, painted in dark blue color. Its dimensions are 131 x 131 x 42 mm. External elements are made of plastic, while the inside there is an aluminum base for mounting all the components. Do note very nice and minimalist design, which blends harmoniously with the company’s logo on the upper side of the case.

ASUS VivoMini UN42

The bottom cover is attached by four screws hidden under the rubber plugs. There is a sticker with technical data. Among the above information do note inputs external power supply: 100 ~ 240V AC at 50/60 Hz. Two small holes on the sides are designed for fixing the complete mounting VESA-compatible.

ASUS VivoMini UN42

Looking closer at the top panel, you can draw attention not only to the company's logo, but also on the texture in the form of concentric circles, well-known to us by other ASUS devices.

ASUS VivoMini UN42

The front side has only button that is responsible for turning on the system. It has a LED-backlit blue color that lights up after turning on the PC.

ASUS VivoMini UN42

ASUS VivoMini UN42

The back and one of the sides are reserved for various interfaces. On the left side panel there are two USB 3.0 ports with support for technology Battery Charging 1.2 for faster charging of connected devices, a Kensington lock slot and a card reader.

The remaining ports are concentrated on the rear panel. There are: power connector, HDMI, DisplayPort, network interface RJ45, two USB 3.0 ports and a combined audio jack for headphones and microphone. Also here you can notice a ventilation grille.

Inner packaging  

ASUS VivoMini UN42

Looking inside the body, the first thing to draw attention is the two slots for RAM in format SO-DIMM, pre-wireless interface module Wi-Fi 802.11 a/b/g/n/ac and Bluetooth 4.0 and installed mSATA-drive of company SK hynix.

ASUS VivoMini UN42

ASUS VivoMini UN42

ASUS VivoMini UN42

The cooling system uses cooler SUNON GB0555PDV1-A. It consists of a small radial fan and copper fin radiator. The processor contacts with the chipset heatsink via a small layer of thermal paste applied on the base.

ASUS VivoMini UN42


ASUS VivoMini UN42

The motherboard is made on a compact PCB of dark brown. Please note that the manufacturer used an integrated solution, where the chip is located on the substrate with the processor. This approach allows to simplify the design of power distribution and cooling system. Power supplying of processor is carried by a two-phase scheme for cores and additional nodes. Converter is based on a digital PWM controller NCP81101A manufactured by ON Semiconductor.

ASUS VivoMini UN42

In order to support network connections is used a Gigabit LAN-controller Realtek RTL8111GR.

ASUS VivoMini UN42

The audio subsystem of motherboard is based on the HDA-codec Conexant CX20752. It consists of two pairs of independent ADCs and DACs, as well as a 2.8-W Class D amplifier for headphones. It is able to process the signal with the bit to 24-bit and sampling rates up to 192 kHz (DAC) or 96 kHz (ADC).

ASUS VivoMini UN42

Multi I/O opportunities are provided by the chip NUVOTON NCT5538D, which controls the operation of the cooler, as well as monitoring.

ASUS VivoMini UN42

To implement the HDMI and DisplayPort there is a controller ASMedia ASM1442K.

ASUS VivoMini UN42

At the bottom of the case between the metal frame and plastic elements there is an installed antenna of wireless interfaces, so you should not place the mini-computer near sources of interference.

ASUS VivoMini UN42

ASUS VivoMini UN42

Our specimen ASUS VivoMini UN42 is packaged with one memory module Kingston ASU16D3LFS1KBG with frequency of 1600 MHz and capacity of 2 GB. There is SSD SK hynix HFS032G3AMNB-2200A AG with capacity of 32GB.

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