Product Datasheet
20 May 2026
Panel PC / Monitor / Mobile · Industrial-Panel-PC
OFP-21W33
Series: OFP
The Avalue OFP-21W33 is a 21.5" Full-HD fanless open-frame industrial panel PC built on the low-power Intel Celeron J3455 processor with the EMX-APLP SBC, designed as a slim, cost-effective integration-ready compute-and-display module for kiosks, machines, and OEM enclosures. With dual DDR3L SO-DIMM sockets supporting up to 16GB and an optional Infineon SLB9665 TPM 2.0, it delivers reliable fanless operation in a bezel-free package. The 1920x1080 PCAP 10-point multi-touch panel supports HDMI/DP output up to 3840x2160. Connectivity includes 2x GbE LAN (Intel I211AT), 4x USB 3.0, DP++, line-out/mic-in, and a configurable RS-232/422/485 COM port, with an M.2 2230 A-Key for optional Wi-Fi/BT. A wide +12~24V DC input and fanless 0~45°C operation make the OFP-21W33 a rugged, embeddable touch front-end for industrial HMI and signage.
Key Features
- 21.5" Full-HD (1920x1080) PCAP 10-point multi-touch open-frame panel PC, fanless
- Intel Celeron Processor J3455 (EMX-APLP)
- 2 x 204-pin DDR3L 1600 & 1333MHz SO-DIMM, up to 16GB
- HDMI/DP output up to 3840 x 2160
- 2x GbE LAN (Intel I211AT), 4x USB 3.0
- DP++, line-out, mic-in, configurable COM port
- M.2 (2230) A-Key for optional Wi-Fi/BT
- Option for Infineon SLB9665 TPM 2.0, 16-bit GPIO
- Wide +12 ~ +24V DC input, fanless 0~45°C; CE / FCC Class A
Technical Specifications
System Information
| Processor | Intel® Celeron® Processor J3455, 2M Cache, up to 2.30 GHz |
|---|---|
| System Memory | Default with 4GB DDR3L memory, option supports up to 16GB DDR3L 1600 & 1333MHz SO-DIMM |
| I/O Chipset | EC iTE IT8528 |
| Watchdog Timer | H/W reset: 1sec. ~ 65535sec./min. and 1sec. or 1min./step |
| BIOS | AMI 128Mbit SPI BIOS |
| H/W Status Monitor | Monitoring system temperature and voltage with auto throttling controll |
| SBC | EMX-APLP |
| CPU Cooler (Type) | Fanless heatsink |
| Other | 2 x Antenna mounting with dust cover (reserve) |
Expansion
| Expansion | 1 x M.2 (2230) A-Key support WiFi module |
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Storage
| Storage | Default with 64GB mSATA |
|---|---|
| Other Storage Device | Reserve space for 1 x 2.5 drive bay design (by option) |
Display
| Graphic Chipset | Intel® HD graphics 500 |
|---|---|
| Spec. & Resolution | HDMI/DP: 3840 x 2160 @ 30Hz, 2560 x 1600 @ 30Hz |
Audio
| Audio Codec | Realtek ALC662 |
|---|---|
| Audio Interface | Mic-in, Line-out |
| Audio Amplifier | 2 x Stereo class-D 3W audio amplifier |
Ethernet
| LAN Chipset | 2 x Intel I211AT Gigabit Ethernet |
|---|---|
| Ethernet Interface | 10/100/1000 Base-Tx GbE compatible |
Power Requirement
| DC Input | +12V ~ +24V |
|---|---|
| ACPI | Single power ATX support S0, S3, S4, S5 and ACPI 3.0 compliant |
Software Support
| OS | Win10 / Linux / Android 8.1 |
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Certification
| Certification Information | CE / FCC Class A |
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Panel
| LCD Size | 21.5", 16:9 |
|---|---|
| Display Type | Full HD |
| Resolution | 1920 x 1080 |
| Pixel pitch | 0.24795mm(H) x 0.24795mm(V) |
| Luminance | 250 cd/m2 |
| Contrast ratio | 2000 |
| Viewing angle | 89 (U), 89 (D), 89 (L), 89 (R) |
| Response time | 35 ms |
| Backlight | LED |
| Touch Type | Projective capacitive multi-touch up to 10 points |
| Touch Light Transmission | 89% |
| Touch Controller | EETI |
External I/O
| USB Port | 4 x USB 3.0, 4 x USB 2.0 (option) |
|---|---|
| LAN Port | 2 x RJ-45 |
| COM Port | 1 x RS232(default)/RS422/485, 4 x RS232(option, pin9 without power) |
Internal I/O
| DIO | 16-bit GPIO with DB9 connector(option) |
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System Control
| LED Indicator | HDD LED, power LED |
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Mechanical & Environmental
| Operating Temp. | 0°C ~ 40°C (32°F ~ 104°F) |
|---|---|
| Storage Temp. | -20°C ~ 60°C (-4°F ~ 140°F) |
| Operating Humidity | 0% ~ 90% Relative humidity, non-condensing |
| Dimension (W x L x H) | 501.9 x 296.2 x 52.4mm |
| Weight | 4.1 Kg |
| Vibration Test | With mSATA : 1.5Grms, IEC 60068-2-64, random, 5 ~ 500Hz, 0.5hr/axis |
| Shock Test | Operating with mSATA : IEC 60068-2-27 testing procedures, 10G for operation mode |
| Drop Test | ISTA 2A, IEC-60068-2-32 Test:Ed |
| Mounting Kit | Wall / Stand / VESA 75mm x 75mm, 100mm x 100mm |
| Power Mode | AT/ATX (ATX is default) |
| System Fan | Fanless |
Ordering Information
| Ordering Information | OFP-21W33-345-A2R | 21.5 Full-HD Multi Touch Open Frame Panel PC / Intel Celeron J3455, 4GR,64GB mSATA,4USB3,COM,2LAN,DP++,DP,HDMI without adapter, ACC-OFP-21-PMT-01R | Panel Mount Kits for OFP-21W series, ACC-OFP-21-WMT-01R | Wall Mount Kits for OFP-21W series, ACC-ADP-060N-08R | AC/DC adapter 12V/5A 90 degree Screw Type, E1702031833R | USA Power Cord, E1702031000R | EU Power Cord, E1702031834R | Japan Power Cord, E1702031830R | UK Power Cord, E1702031831R | Australia Power Cord |
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