# Beckhoff CX5120-01xx-9020

Hardware · `CX5120-01xx-9020` · verification: source checked

The Beckhoff CX5120-01xx-9020 is a fanless embedded PC based on the CX5100 series hardware. It uses a 1.20 GHz Intel Atom E3815 single-core processor and provides two gigabit Ethernet ports, four USB 2.0 ports, a DVI-I output, and CFast/microSD storage slots. It runs Windows Embedded Compact 7 with TwinCAT 2 or TwinCAT 3 runtime and can be expanded with optional E-bus/K-bus I/O and communication interfaces.

## Specification

| Property | Value |
|---|---|
| Category | embedded pc |
| Weight | 0.975 kg |
| Ethernet ports | 2 |
| Processor | Intel Atom® E3815, 1.20 GHz |
| Supply voltage | 24 V DC (-15%/+20%) |
| Power consumption | 0.01 kW |
| IP rating | IP20 |
| Operating temp min | -25 °C |
| Operating temp max | 60 °C |

## Connected

- Manufacturer: [Beckhoff Automation](https://machineschema.com/manufacturer/beckhoff.md)

## Safety

- Approvals/markings: CE and UL.

## Study notes

- Product status: regular delivery, not recommended for new projects; the recommended alternative is CX9240.
- Main memory is 2 GB DDR3 RAM and is not expandable.
- Flash storage uses a CFast card slot and a microSD card slot; a 512 MB microSD card is included.
- NOVRAM persistent data memory is 128 kB.
- Cooling is passive; the device has a fanless design.
- TwinCAT 3 platform level is Economy Plus (30).
- Windows Embedded Compact 7 extended support has ended; up-to-date security updates can no longer be provided, and TwinCAT is supported only up to build 4024.
- Optional interfaces include RS232, RS485/RS422, EtherCAT slave, PROFIBUS master/slave, CANopen master/slave, and PROFINET RT controller/device.
- Ordering variants CX5120-0100-9020, CX5120-0110-9020, CX5120-0111-9020, CX5120-0112-9020, and CX5120-0115-9020 differ by operating system and TwinCAT licenses.
- Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27; EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4.

## Sources

1. [Embedded PC with Intel Atom® processor](https://www.beckhoff.com/en-en/products/ipc/embedded-pcs/cx51x0-intel-atom-r/cx5120-01xx-9020.html) (accessed 2026-10-25)

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