Fanless box PC · 8×8 digital I/O · MODBUS compatible
EPC-302A 8×8 Digital I/O Fanless Industrial Box PC
8×8 GPIO · 4× COM · 6× USB · Dual LAN · 337 × 160 × 47.5 mm · 2.3 kg · Fanless
Eight inputs and eight outputs of 24V digital I/O sit on the same board set as the processor in the EPC-302A, a fanless aluminium box PC that reads the field signals and runs the HMI, logging or MES client that consumes them — without a separate PLC I/O card and its extra wiring. The I/O block is MODBUS compatible, and the same chassis carries 4× RS232, 6× USB, dual Intel I210 Gigabit LAN and HDMI + VGA dual display.
8×8 digital I/OMODBUS compatible24V I/O level4× RS232 DB96× USBDual Intel I210 LAN
17+
Years
50+
Countries
1
MOQ unit
2–4
Weeks lead
OEM
ODM & branding
At a glance
EPC-302A key specifications
Everything that decides whether this box fits your cabinet — I/O count, processor ladder, memory and storage, and the environment it holds.
Processor
Intel® Core™ 12th Gen i3-1215U (i5-1235U / i7-1255U optional)
Memory
DDR5 8–32GB
Storage
2× M.2 SSD
Digital I/O
8×8 GPIO · MODBUS compatible · 24V
Serial
4× RS232 DB9
USB
2× USB 2.0 + 4× USB 3.0
Ethernet
2× 10/100/1000M Intel I210 LAN
Display
1× HDMI + 1× VGA (dual display)
Cooling
Fanless — no fan, no filter
Operating temperature
0–50 ℃ (−40–70 ℃ optional)
Dimensions
337 × 160 × 47.5 mm
Mounting
Wall mount / VESA mount
Design notes
Why put the digital I/O inside the computer
Field I/O and the computer in one box
The EPC-302A carries 8 inputs and 8 outputs of 24V digital I/O on the same board set as the processor. That removes the usual pairing of a PLC I/O card plus a separate box PC: one chassis reads the sensors, drives the lamps and relays, and runs the software in the same 337 × 160 × 47.5 mm footprint. The I/O block is MODBUS compatible, so it joins an existing PLC, remote I/O or SCADA system as another MODBUS node instead of needing proprietary drivers.
- 8 inputs + 8 outputs at 24V — the standard industrial signalling level
- MODBUS compatible — speaks to existing PLC and SCADA systems
- Field devices, sensors, relays and pilot lamps wire straight in, no level shifter
- 4× RS232 DB9 alongside the GPIO for scanners, indicators and legacy controllers
- 2× Intel I210 Gigabit LAN for a separate machine and plant network
Fanless at 47.5 mm deep
A cooling fan pulls the air around it — including the conductive dust, metal filings and oil mist that are normal inside a machine cabinet — straight through the electronics. The EPC-302A removes the fan entirely and dissipates heat through its high-strength aluminium alloy housing. At 47.5 mm deep and 2.3 kg it fits on a cabinet back plate or a machine frame where a larger box PC plus its clearance will not go.
- Passive cooling only — no fan, no filter, no scheduled cleaning
- 47.5 mm deep and 2.3 kg — wall mount or VESA mount
- 0–50 ℃ standard, −40–70 ℃ optional for cold stores and outdoor cabinets
- 10%–90% relative humidity, non-condensing
- AT / ATX startup — the unit can be set to resume automatically when plant power returns
Three factory builds on one chassis
The mechanical design, the I/O count and the mounting are identical across all three orderable builds of the EPC-302A — only the processor and the standard memory change. C10.03.03.001 ships with the 12th Gen i3-1215U and 8GB, C10.03.03.002 steps up to the i5-1235U, and C10.03.03.003 takes the i7-1255U with 16GB. Memory is DDR5, 8–32GB, and two M.2 SSD slots let the operating system and the data or image archive live on separate drives.
- 3 orderable builds — same chassis, same I/O, different compute
- DDR5 8–32GB and 2× M.2 SSD
- Windows 10 / 11 and Linux Ubuntu supported
- CE / FCC / BIS according to EN 55032
- ODM support — custom BIOS, boot-on LOGO and OEM branding from the factory
Configurations
Choose the EPC-302A configuration
Three factory builds on one chassis. The enclosure, the mounting and the full I/O set — 8×8 digital I/O (GPIO, 24V, MODBUS compatible) · 4× RS232 DB9 · 2× USB 2.0 + 4× USB 3.0 · HDMI + VGA · audio · 2× Intel I210 Gigabit LAN — are identical across all three; only the processor and the standard memory change.
Intel® Core™ i3-1215U
Entry · Core i3
Best forGateway and protocol-conversion nodes, sensor-reading test benches, and packaging or filling stations where 24V signals drive lamps and relays but the software load stays light.
Part number C10.03.03.001 — standard build: 8GB memory, SSD 256GB.
System core
| Processor | Intel® Core™ i3-1215U |
| Memory | 8GB (8–32GB DDR5) |
| Storage | SSD 256GB |
| Storage slots | 2× M.2 SSD |
| Cooling | Fanless |
| Operating system | Windows 10 / 11 · Linux Ubuntu |
Digital I/O & interfaces
| USB 2.0 | 2× USB 2.0 |
| USB 3.0 | 4× USB 3.0 |
| COM | 4× RS232 DB9 |
| Display | 1× HDMI + 1× VGA (dual display) |
| Audio | 1× Audio |
| Ethernet | 2× 10/100/1000M Intel I210 LAN |
| GPIO | 8×8 Digital I/O; MODBUS compatible; 24V |
Wireless & expansion
| Wireless network | 4G full network compatibility (optional) |
| Wi-Fi | Wi-Fi / Bluetooth (M.2) |
Power
| DC input | 1× 3-pin pluggable terminal block |
| Booting | AT / ATX |
Environmental
| Operating temperature | 0–50 ℃ (−40–70 ℃ optional) |
| Storage temperature | −10–60 ℃ |
| Humidity | 10%–90%, non-condensing |
Mechanical
| Dimension | 337 (W) × 160 (D) × 47.5 (H) mm |
| Weight | 2.3 KG |
| Material | High-strength aluminium alloy |
| Mounting | Wall mount / VESA mount |
Compliance & ODM
| Certifications | CE / FCC / BIS, according to EN 55032 |
| ODM | BIOS / Boot on LOGO / OEM |
Intel® Core™ i5-1235U
Balanced · Core i5
Best forStations that both read field I/O and run a full HMI or SCADA client, or a local database alongside the operator screen.
Part number C10.03.03.002 — standard build: 8GB memory, SSD 256GB.
System core
| Processor | Intel® Core™ i5-1235U |
| Memory | 8GB (8–32GB DDR5) |
| Storage | SSD 256GB |
| Storage slots | 2× M.2 SSD |
| Cooling | Fanless |
| Operating system | Windows 10 / 11 · Linux Ubuntu |
Digital I/O & interfaces
| USB 2.0 | 2× USB 2.0 |
| USB 3.0 | 4× USB 3.0 |
| COM | 4× RS232 DB9 |
| Display | 1× HDMI + 1× VGA (dual display) |
| Audio | 1× Audio |
| Ethernet | 2× 10/100/1000M Intel I210 LAN |
| GPIO | 8×8 Digital I/O; MODBUS compatible; 24V |
Wireless & expansion
| Wireless network | 4G full network compatibility (optional) |
| Wi-Fi | Wi-Fi / Bluetooth (M.2) |
Power
| DC input | 1× 3-pin pluggable terminal block |
| Booting | AT / ATX |
Environmental
| Operating temperature | 0–50 ℃ (−40–70 ℃ optional) |
| Storage temperature | −10–60 ℃ |
| Humidity | 10%–90%, non-condensing |
Mechanical
| Dimension | 337 (W) × 160 (D) × 47.5 (H) mm |
| Weight | 2.3 KG |
| Material | High-strength aluminium alloy |
| Mounting | Wall mount / VESA mount |
Compliance & ODM
| Certifications | CE / FCC / BIS, according to EN 55032 |
| ODM | BIOS / Boot on LOGO / OEM |
Intel® Core™ i7-1255U
Performance · Core i7
Best forMulti-camera inspection benches, edge analytics on the I/O stream, and logging applications that write continuously to the second M.2 drive.
Part number C10.03.03.003 — standard build: 16GB memory, SSD 256GB.
System core
| Processor | Intel® Core™ i7-1255U |
| Memory | 16GB (8–32GB DDR5) |
| Storage | SSD 256GB |
| Storage slots | 2× M.2 SSD |
| Cooling | Fanless |
| Operating system | Windows 10 / 11 · Linux Ubuntu |
Digital I/O & interfaces
| USB 2.0 | 2× USB 2.0 |
| USB 3.0 | 4× USB 3.0 |
| COM | 4× RS232 DB9 |
| Display | 1× HDMI + 1× VGA (dual display) |
| Audio | 1× Audio |
| Ethernet | 2× 10/100/1000M Intel I210 LAN |
| GPIO | 8×8 Digital I/O; MODBUS compatible; 24V |
Wireless & expansion
| Wireless network | 4G full network compatibility (optional) |
| Wi-Fi | Wi-Fi / Bluetooth (M.2) |
Power
| DC input | 1× 3-pin pluggable terminal block |
| Booting | AT / ATX |
Environmental
| Operating temperature | 0–50 ℃ (−40–70 ℃ optional) |
| Storage temperature | −10–60 ℃ |
| Humidity | 10%–90%, non-condensing |
Mechanical
| Dimension | 337 (W) × 160 (D) × 47.5 (H) mm |
| Weight | 2.3 KG |
| Material | High-strength aluminium alloy |
| Mounting | Wall mount / VESA mount |
Compliance & ODM
| Certifications | CE / FCC / BIS, according to EN 55032 |
| ODM | BIOS / Boot on LOGO / OEM |
Drawings
Dimensions and I/O layout
Check the depth against your cabinet before ordering — at 47.5 mm the EPC-302A fits back plates where a standard box PC will not.
Ordering information
Part numbers and standard builds
Each row is a complete factory build: the part number fixes processor, memory and storage. The enclosure, the mounting and the full I/O set — 8×8 digital I/O (GPIO, 24V, MODBUS compatible) · 4× RS232 DB9 · 2× USB 2.0 + 4× USB 3.0 · HDMI + VGA · audio · 2× Intel I210 Gigabit LAN — are the same for every row.
| NO. | Model | Product Part Number | Description | Standard Memory | Standard Storage |
|---|---|---|---|---|---|
| 1 | EPC-302A | C10.03.03.001 | Intel® Core™ i3-1215U Processor | 8GB | SSD 256GB |
| 2 | EPC-302A | C10.03.03.002 | Intel® Core™ i5-1235U Processor | 8GB | SSD 256GB |
| 3 | EPC-302A | C10.03.03.003 | Intel® Core™ i7-1255U Processor | 16GB | SSD 256GB |
Contact sales for volume pricing, memory and storage upgrades, the −40–70 ℃ extended temperature build, and 4G / Wi-Fi configuration on the same part numbers.
Video
EPC-302A video walkthrough
This walkthrough covers the EPC-302A — 8×8 digital I/O (GPIO) — the field wiring, the three processor builds and how the 47.5 mm chassis fits a control cabinet.
Downloads
EPC-302A downloads
The datasheet is available immediately. Manuals, drivers, certificates and drawings are issued with the quotation.
EPC-302A datasheet
Full specifications, I/O layout, dimensions and the ordering table (PDF).
Panel PC buying guide
How to size the display, choose the protection rating and specify the cutout.
Industrial PC FAQ
Processor, operating system, mounting and environmental questions.
Manual, drivers & certificates
User manual, driver pack, CE / FCC / BIS certificates, 2D and 3D drawings — issued per order.
FAQ
EPC-302A frequently asked questions
Questions about the 8×8 digital I/O, 24V signalling, MODBUS integration, processor builds and the mechanical fit.
What is the EPC-302A, and what makes it different from a standard box PC?
The EPC-302A is a fanless industrial box PC built around 8×8 digital I/O (GPIO) on top of a normal PC. Alongside the GPIO block it carries 4× RS232 on DB9, 2× USB 2.0, 4× USB 3.0, dual Intel I210 Gigabit LAN, HDMI + VGA dual display and audio — so one chassis reads field signals and runs the HMI, logging or MES client that consumes them, without a separate PLC I/O card and its extra wiring.
How many digital I/O points does it provide, and how do they talk to my PLC?
It provides 8 inputs and 8 outputs of 24V digital I/O, and the block is MODBUS compatible. So it joins an existing PLC, remote I/O or SCADA system as another MODBUS node instead of needing proprietary drivers. The 24V level is the standard industrial signalling voltage, which means sensors, relays and pilot lamps wire straight in without an intermediate level shifter.
Which processor runs the GPIO box PC, and how many builds are there?
The base build is an Intel® Core™ 12th Gen i3-1215U. Three factory builds are orderable: C10.03.03.001 i3-1215U with 8GB, C10.03.03.002 i5-1235U with 8GB, and C10.03.03.003 i7-1255U with 16GB — all with a 256GB SSD. The enclosure, the I/O count and the mounting are identical across all three.
How much memory and storage does the I/O unit carry?
Memory is DDR5, 8–32GB, and storage is 2× M.2 SSD. Two M.2 slots let the operating system and the data or image archive sit on separate drives.
How many ports does it have in total?
4× RS232 on DB9, 6× USB (2× USB 2.0 + 4× USB 3.0), 2× 10/100/1000M Intel I210 Gigabit LAN, 1× HDMI + 1× VGA for dual independent displays, and 1× audio. Wireless is 4G (optional) plus Wi-Fi / Bluetooth over M.2.
Can a 24V I/O box PC run fanless inside a cabinet?
It is completely fanless — no fan, no filter, no air path pulling dust, metal filings or oil mist across the boards. Operating temperature is 0–50 ℃ as standard with −40–70 ℃ optional; storage is −10–60 ℃ and humidity 10%–90% non-condensing.
What are the dimensions, weight and mounting, and what power does it need?
337 (W) × 160 (D) × 47.5 (H) mm, 2.3 kg, in high-strength aluminium alloy with wall mount and VESA mount. Power comes in through a 1× 3-pin pluggable terminal block, and startup is switchable between AT and ATX so the unit can resume automatically when plant power returns.
What certifications and ODM options does the GPIO model carry?
CE, FCC and BIS according to EN 55032. ODM covers custom BIOS, boot-on-LOGO and OEM branding from the factory, on the same chassis and part numbers. Supported systems are Windows 10 / 11 and Linux Ubuntu.
What is the EPC-302A best suited to?
Machines that need field signal I/O and a computer in one box: gateway and protocol-conversion nodes, test and inspection benches that read sensors and log results, packaging or filling stations where 24V signals drive lamps and relays, and retrofit jobs where the panel already has 24V wiring but no space for a separate PLC rack plus a box PC.
Related models
Other models in the family
The LEGO MODE box PC family covers digital I/O and fieldbus, serial and USB, multi-LAN, cellular and power-redundant variants on one modular platform. The EPC-302A is the one built around 8×8 digital I/O; if you need more COM ports, five LAN, battery backup, redundant power or a SIM-card slot, one of its siblings carries it.
Tell us your I/O list and your cabinet space
Send us the signals you need to read and drive, the ports, the supply voltage and the space available. We will confirm the configuration, the part number, the lead time and the price — typically the same working day.
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