What are the key features of the ARC-21W39 Panel PC?

The ARC-21W39 is a 21.5" Full HD (1920x1080) widescreen fanless industrial touch panel PC with Intel N97 / Amston Lake X7433RE / Twin Lake N150 CPUs, DDR5 4800 up to 32GB, a bright 500 cd/m² panel with 10-point PCAP touch, dual Intel I226LM 2.5GbE, USB-C with display, M.2 + optional IET module, a 2.5" drive bay, and wide +12~24V input.

Which processors does the ARC-21W39 support?

It supports low-power Intel SoCs: Alder Lake-N N97 (12W), Amston Lake X7433RE (9W), and Twin Lake N150 (6W) — efficient platforms enabling a fanless design even at large screen size.

What display and touch does the ARC-21W39 offer?

A 21.5" 16:9 Full HD (1920x1080) LED panel at 500 cd/m² with projected-capacitive 10-point multi-touch (89% transmission, EETI controller).

How much memory does the ARC-21W39 support?

It has a single 262-pin DDR5 4800MHz SO-DIMM socket supporting up to 32GB (non-ECC only).

What networking does the ARC-21W39 provide?

Dual Intel I226LM 2.5 Gigabit Ethernet ports (10/100/1000/2.5G), for high-speed industrial networking and redundancy.

Does the ARC-21W39 have a USB-C port?

Yes, a USB Type-C (USB 3.2 Gen2x1, 10Gbps) with display function and 5V/3A output for modern peripherals and single-cable display.

What expansion and storage does the ARC-21W39 offer?

An M.2 Key-B (SATA/USB, SIM for LTE), an M.2 Key-E 2230 (Wi-Fi), an optional IET module, a 2.5" drive bay, and SATA3/M.2 SATA SSD storage.

Is the ARC-21W39 fanless?

Yes, it uses a fanless heatsink for reliability and dust resistance even in a large-format 21.5" enclosure.

What power input does the ARC-21W39 use?

A wide +12V ~ +24V DC input via a lockable DC jack (default) or optional phoenix connector, with ATX power management (ACPI 3.0).

What applications is the ARC-21W39 best suited for?

With a large bright 21.5" multi-touch display, low-power fanless design, dual 2.5GbE, and LTE/IET expansion, it suits large-format machine HMI, control rooms, SCADA, and information displays.

What is an Industrial Panel PC?

An Industrial Panel PC is a robust computing device designed for industrial environments, featuring a touchscreen display integrated with a computer. These systems are built to withstand harsh conditions including dust, moisture, temperature extremes, and vibration, while providing reliable operation for factory automation, control systems, and HMI applications.

What makes a Panel PC 'industrial grade'?

Industrial grade Panel PCs feature rugged construction with IP65/IP66 front panel protection, extended temperature operation, shock and vibration resistance, fanless cooling for reliability, wide voltage input tolerance, and long product lifecycles designed for 24/7 operation in challenging environments.

What is the difference between a Panel PC and an HMI?

While both provide operator interface functionality, a Panel PC is a full-featured computer running a standard operating system (Windows, Linux) that can host any software application. An HMI is typically a simpler device with an embedded operating system designed specifically for machine/process control with limited functionality beyond its control software.

What mounting options are available for Panel PCs?

Panel PCs typically offer multiple mounting options including panel mount (cutout installation in cabinets/enclosures), VESA mount (standard bracket mounting to walls or arms), and sometimes desktop stands. Some specialized models may offer additional mounting options for specific industries.

What operating systems are supported on industrial Panel PCs?

Most industrial Panel PCs support Windows 10 IoT Enterprise, Windows 11 Pro, and various Linux distributions like Ubuntu. The specific OS support depends on the hardware configuration, with some models offering pre-installed options or being compatible with multiple operating systems.

What is IP65/IP66 protection and why is it important?

IP65/IP66 protection ratings indicate dust-tight (6) protection and resistance to water jets (5/6). This is essential for industrial Panel PCs that may be exposed to harsh factory environments with dust, splashes, or washdown procedures, ensuring reliable operation and longevity in challenging conditions.

Why are fanless designs important in industrial Panel PCs?

Fanless designs eliminate moving parts that could fail, prevent dust and contaminant ingress through ventilation openings, reduce maintenance requirements, increase reliability in high-vibration environments, and allow sealed enclosures for protection against harsh industrial conditions.

What is PCAP multi-touch technology?

PCAP (Projected Capacitive) multi-touch technology allows multiple simultaneous touch points on the screen, enabling intuitive gestures like pinch-to-zoom. It offers better optical clarity than resistive touchscreens, with a durable glass surface resistant to scratches, though it requires bare finger or special stylus operation.

What is a watchdog timer and why is it important?

A watchdog timer is a hardware-based timer that triggers a system reset if the software becomes unresponsive. This is crucial for industrial systems requiring high reliability and 24/7 operation, as it automatically recovers from software crashes or freezes without human intervention.

What does wide voltage input range mean for Panel PCs?

A wide voltage input range (typically 9-36VDC) allows Panel PCs to operate reliably in industrial environments with fluctuating power conditions. This provides flexibility in power source options and protection against voltage spikes and drops common in factory settings.

What is TPM and why is it included in industrial Panel PCs?

TPM (Trusted Platform Module) is a security chip that provides hardware-based encryption capabilities and secure storage for authentication credentials. In industrial settings, it helps protect sensitive data, secure communication channels, and ensure the integrity of control systems against unauthorized access.

How are Panel PCs typically mounted in industrial environments?

Panel PCs are typically installed using panel mount (where the unit is fitted into a cutout in a control cabinet with mounting clips or screws), VESA mount (attached to arms or wall mounts using standardized mounting patterns), or sometimes with custom mounting solutions for specific applications.

What cutout dimensions are needed for panel mounting?

Cutout dimensions vary by model and screen size. It's essential to refer to the specific Panel PC's installation guide for precise measurements. Most manufacturers provide detailed dimensional drawings showing the exact cutout size and mounting hole positions required.

What environmental conditions should be considered when installing Panel PCs?

Consider operating temperature range, humidity levels, exposure to dust or liquids, vibration/shock conditions, available power supply stability, electromagnetic interference sources, and ambient light conditions that might affect screen visibility when installing Panel PCs.

Do Panel PCs require additional cooling?

Most industrial Panel PCs are designed with fanless cooling systems that dissipate heat through the chassis. While they typically don't require additional cooling, it's important to ensure adequate air circulation around the unit and to avoid installing them in locations that exceed their specified operating temperature range.

What power supply requirements should be considered for Panel PCs?

Consider voltage requirements (typically 9-36VDC), current/power consumption specifications, power supply stability, surge protection needs, and whether battery backup or uninterruptible power supply (UPS) is necessary for critical applications to prevent data loss during power interruptions.

What should I do if the touchscreen becomes unresponsive?

First, try restarting the Panel PC. If the issue persists, check if the touch driver is installed and functioning properly, verify the touchscreen cable connection, ensure the operating environment is within specifications (especially for capacitive screens in high humidity), and check for physical damage to the screen surface.

How can I resolve overheating issues with fanless Panel PCs?

To address overheating: ensure the Panel PC is installed with adequate clearance for passive cooling, check that the ambient temperature is within specified operating range, clean dust buildup on cooling fins/chassis, verify that CPU-intensive applications aren't causing excessive load, and consider adding external cooling to the enclosure if necessary.

What causes Panel PCs to restart unexpectedly?

Unexpected restarts can be caused by unstable power supply, overheating, hardware failures, software issues, or watchdog timer activations due to system hangs. Check power stability, environmental conditions, system logs for error messages, and consider disabling the watchdog timer temporarily for diagnostic purposes.

How can I improve the visibility of the Panel PC screen in bright environments?

To improve visibility in bright environments, adjust the screen brightness to maximum, install an anti-glare shield or hood, position the Panel PC to avoid direct light sources, consider a higher-brightness model (500+ cd/m²) for new installations, or apply an anti-reflective film designed for industrial displays.

What should I do if Windows fails to boot on my Panel PC?

If Windows fails to boot, try booting in Safe Mode, use System Restore to revert to a working state, run startup repair from recovery options, check for hardware issues (particularly storage drives), verify BIOS/UEFI settings are correct, or restore from a system image backup if available.

Avalue · Panel PC / Monitor / Mobile

ARC-21W39

Data Sheet

*Price on request. Contact us for a quote.

Manufacturer: Avalue

Highlights

21.5" Full HD (1920x1080) 500-nit PCAP 10-point multi-touch, fanless
Intel Alder Lake-N N97 / Amston Lake X7433RE / Twin Lake N150 (ARC-ASL SBC)
1 x DDR5 4800MHz SO-DIMM, up to 32GB (non-ECC)
Dual Intel I226LM 2.5GbE
M.2 Key-B (SATA/USB, LTE SIM) + M.2 Key-E (Wi-Fi) + optional IET module
USB 3.2 + USB Type-C (display + 5V/3A); RS-232/422/485 + RS-232
1 x 2.5" drive bay + M.2 SATA SSD
Wide +12V ~ +24V input
CE / FCC Class A; Windows / Linux

Product Description

The Avalue ARC-21W39 is a 21.5" Full HD widescreen fanless industrial touch panel PC built on low-power Intel processors — Alder Lake-N N97, Amston Lake X7433RE, or Twin Lake N150 — pairing energy efficiency with a large bright 500 cd/m² display.

A single DDR5 4800MHz SO-DIMM supports up to 32GB, on the ARC-ASL SBC.

The 1920x1080 panel features 10-point projected-capacitive touch (EETI).

Connectivity includes dual Intel I226LM 2.5GbE, USB 3.2 (including USB Type-C with display and 5V/3A output), RS-232/422/485 plus RS-232, an M.2 Key-B (SATA/USB, SIM for LTE) and M.2 Key-E (Wi-Fi), plus an IET expansion module option and a 2.5" drive bay.

A wide +12~24V input makes the ARC-21W39 well suited to large-format machine-side HMI and visualization on Windows or Linux.

Technical Specifications

Processor

Intel® Alder Lake-N N97, 6M Cache, up to 3.6 GHz, 12W

Intel® Amston Lake X7433RE, 6M Cache, up to 3.40 GHz, 9W

Intel® Twin Lake N150, 6M Cache, 0.8 GHz up to 3.60 GHz, 6W

System Memory

1 x 262-pin DDR5 4800MHz SO-DIMM socket, supports up to 32GB Max (non ECC only)

Watchdog Timer

H/W reset, 1sec. ~ 65535sec./1sec.step

H/W Status Monitor

Monitoring CPU & system temperature and voltage

SBC

ARC-ASL

CPU Cooler (Type)

Fanless heatsink

Other

3 x Knockouts for antenna mounting

Expansion

1 x M.2 (Key-B, 2242/3042/3052, SATAIII, USB3.2 Gen1x1(default, 5Gbp/s)) or PCIex1(via OEM BIOS request), USB2.0, SIM Slot for LTE Cards (*Not support PCIex2 device)

1 x M.2 (Key-E, 2230, PCIex1, USB2.0)

1 x optional by IET module

Storage

1 x 2.5 Drive bay(7mm HDD restricted)

HDD/ SSD

1 x SATA3

Other Storage Device

1 x M.2 Key-B 2242/3042/3052 for M.2 SATAIII SSD by default

Audio Codec

Realtek ALC888S

Speaker Output

2 x 2W

LAN Chipset

2 x Intel® I226LM 2.5 Gigabit Ethernet

Ethernet Interface

10/100/1000/2.5G Base-Tx GbE compatible

DC Input

+12V ~ +24V

DC Input Connector

Lockable DC Jack (default)

Optional for phoenix connector

ACPI

Single power ATX support S0, S3, S4, S5 and ACPI 3.0 compliant

OS

Win 10/ Win11 / Linux

Certification Information

CE / FCC Class A

LCD Size

21.5", 16:9

Display Type

FHD

Resolution

1920 x 1080

Pixel pitch

247.95um(H) x 247.95um(V)

Luminance

500 cd/m2

Contrast ratio

1000

Viewing angle

89 (U), 89 (D), 89 (L), 89 (R)

Response time

14 ms

Backlight

LED

Touch Type

Projective capacitive multi-touch up to 10 points

Touch Light Transmission

89%

Touch Controller

USB touch (EETI)

USB Port

2 x USB3.2 (1 x double deck, type A)

1 X USB type C (USB3.2(Gen2x1, 10Gbps, 5V/3A output), display function)

LAN Port

2 x RJ-45

COM Port

1 x RS-232/422/485

1 x RS-232

Expansion

1 x M.2 (Key-B, 2242/3042/3052, SATAIII, USB3.2 Gen1x1(default, 5Gbp/s)) or PCIex1(via OEM BIOS request), USB2.0, SIM slot for LTE cards

(*Not support PCIex2 device)

1 x M.2 (Key-E, 2230, PCIex1, USB2.0)

1 x 80-pin IET interface

DIO

12-bit GPIO + 2-pin CAN bus (by ARC-BYT DB-E)

Other

3 x Knockouts for antenna mounting

LED Indicator

HDD LED, power LED

Operating Temp.

-10°C ~ 50°C (14°F ~ 122°F)

Storage Temp.

-20°C ~ 60°C (-4°F ~ 140°F)

Operating Humidity

40°C @ 95% Relative humidity, non-condensing

Dimension (W x L x H)

538.05 x 341.05 x 60.05mm

Weight

7.3 Kg

Vibration Test

With SSD/mSATA : 1.5Grms, IEC 60068-2-64, random, 5 ~ 500Hz, 1hr/axis

Shock Test

Operating with SSD/CFast/mSATA : MIL-STD-810G, method 516.6, procedure I, functional shock=20G

Drop Test

ISTA 2A, IEC-60068-2-32 Test:Ed

IP Rating

Front panel IP65

Back cover IP41

Mounting Kit

Wall / Stand / VESA 75mm x 75mm, 100mm x 100mm

Panel mount with mounting kits

Power Mode

AT/ATX (ATX is default)

System Fan

Fanless

Construction - Front

Die casting with cover lens

Construction - Rear

Black die casting

Adapter

Input: 100 ~ 240Vac/ 50 ~ 60Hz

Output: 72W adapter (19V @ 3.78A adapter) AC-DC adapter

Ordering Information

ARC-21W39-150-B1R | 21.5" 1920x1080 Industrial Touch Panel PC, ErP Design, PCAP Multi Touch, Intel Processor N150, 3.60 GHz CPU/2GLAN/2COM/2USB3/USB typeC/SPK/12~24V input/72W Adapter

ARC-21W39-355-B1R | 21.5" 1920x1080 Industrial Touch Panel PC, ErP Design, PCAP Multi Touch, Intel Processor i3-N355, 3.90 GHz CPU/2GLAN/2COM/2USB3/USB typeC/SPK/12~24V input/72W Adapter

ACC-ARC-USB-1R | 4 x USB 3.0 Kit for ARC Series

ACC-ARC-AUDIO-1R | HDMI + 5.1 CH Audio Kit for ARC Series

ACC-ARC-MPCIE-1R | HDMI + MPCIE w/SIM Kit for ARC Series

ACC-ARC-COM-1R | 2 x Isolated RS-232 Kit for ARC Series

ACC-ARC-COM-2R | 3 x RS-232 Kit for ARC Series

ACC-ARC-COM-3R | 2 x RS-232 + USB Kit for ARC Series

ACC-ARC-COM-4R | 2 x RS-232 + LAN Kit for ARC Series

ACC-ARC-GPIO-1R | 12-bit GPIO + 2-pin CAN Bus Kit for ARC Series

ACC-ARC-OBDII-1R | OBDII - CAN Bus Kit for ARC Series (OBDII/EOBD for Small Vehicle)

ACC-ARC-OBDII-2R | OBDII - CAN Bus Kit for ARC Series (J1939J1708 for Large Vehicle)

ACC-ARC-OBDII-3R | OBDII - CAN Bus Kit for ARC Series (ISO15765-4 for Special Large Vehicle)

ACC-ADP-060N-08R | AC/DC adapter 12V/5A 90 degree Screw Type

E1702031835R | USA Power Cord

E170203183DR | EU Power Cord

E170203183BR | Japan Power Cord

E170P060370R | UK Power Cord

E170P060392R | Australia Power Cord

What is ARC-21W39?

The ARC-21W39 is a panel pc / monitor / mobile manufactured by Avalue, designed specifically for industrial-panel-pc applications. The Avalue ARC-21W39 is a 21.5" Full HD widescreen fanless industrial touch panel PC built on low-power Intel processors — Alder Lake-N N97, Amston Lake X7433RE, or Twin Lake N150 — pairing energy efficiency with a large bright 500 cd/m² display. A single DDR5 4800MHz SO-DIMM supports up to 32GB, on the ARC-ASL SBC. The 1920x1080 panel features 10-point projected-capacitive touch (EETI). Connectivity includes dual Intel I226LM 2.5GbE, USB 3.2 (including USB Type-C with display and 5V/3A output), RS-232/422/485 plus RS-232, an M.2 Key-B (SATA/USB, SIM for LTE) and M.2 Key-E (Wi-Fi), plus an IET expansion module option and a 2.5" drive bay. A wide +12~24V input makes the ARC-21W39 well suited to large-format machine-side HMI and visualization on Windows or Linux.

Key Features & Benefits

21.5" Full HD (1920x1080) 500-nit PCAP 10-point multi-touch, fanless
Intel Alder Lake-N N97 / Amston Lake X7433RE / Twin Lake N150 (ARC-ASL SBC)
1 x DDR5 4800MHz SO-DIMM, up to 32GB (non-ECC)
Dual Intel I226LM 2.5GbE
M.2 Key-B (SATA/USB, LTE SIM) + M.2 Key-E (Wi-Fi) + optional IET module
USB 3.2 + USB Type-C (display + 5V/3A); RS-232/422/485 + RS-232
1 x 2.5" drive bay + M.2 SATA SSD
Wide +12V ~ +24V input
CE / FCC Class A; Windows / Linux

Applications & Use Cases

The ARC-21W39 is ideal for various industrial automation applications:

Dust-sensitive environments and silent operation requirements
DC-powered industrial installations and mobile applications
Wireless connectivity and remote monitoring applications
Legacy equipment integration and serial communication
High-performance computing and data processing tasks
Interactive control interfaces and operator panels
Peripheral device connectivity and data transfer
Memory-intensive applications and multitasking

Highlights

Product Description

Technical Specifications

System Information

Processor

System Memory

Watchdog Timer

H/W Status Monitor

SBC

CPU Cooler (Type)

Other

Expansion

Expansion

Storage

Storage

HDD/ SSD

Other Storage Device

Audio

Audio Codec

Speaker Output

Ethernet

LAN Chipset

Ethernet Interface

Power Requirement

DC Input

DC Input Connector

ACPI

Software Support

OS

Certification

Certification Information

Panel

LCD Size

Display Type

Resolution

Pixel pitch

Luminance

Contrast ratio

Viewing angle

Response time

Backlight

Touch Type

Touch Light Transmission

Touch Controller

External I/O

USB Port

LAN Port

COM Port

Internal I/O

Expansion

DIO

Other

System Control

LED Indicator

Mechanical & Environmental

Operating Temp.

Storage Temp.

Operating Humidity

Dimension (W x L x H)

Weight

Vibration Test

Shock Test

Drop Test

IP Rating

Mounting Kit

Power Mode

System Fan

Construction - Front

Construction - Rear

Component

Adapter

Ordering Information

Ordering Information

What is ARC-21W39?

Key Features & Benefits

Applications & Use Cases

Frequently Asked Questions