The APU3D4 board is a compact and low-power embedded system board designed by PC Engines. It features a quad-core AMD GX-412TC processor with a clock speed of 1 GHz and an integrated Radeon R3 graphics processor. The board is equipped with 4 GB DDR3-1333 DRAM, 2 MB L2 cache, and a SATA port for internal storage.


One of the most notable features of the APU3D4 board is its three Gigabit Ethernet ports, all of which are based on Intel i211AT controllers. This makes the board an ideal choice for network applications such as firewalls, load balancers, and VPN routers.


The APU3D4 board also includes two internal USB 2.0 ports and two external USB 3.0 ports, an mSATA slot, and a mini PCIe slot for optional wireless connectivity. It is compatible with various open-source operating systems, including Linux, BSD, and pfSense.


In terms of its applications, the APU3D4 board can be used as a firewall, load balancer, VPN router, thin client, compact server, and NAS. It is a versatile and powerful platform that can handle a wide range of tasks.


Finally, the APU3D4 board is the next generation of the popular APU1D4 board. It builds upon the success of its predecessor while offering improved performance and additional features.


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Instructions for Cooling assembly



Data sheet

Processor (CPU)
AMD Embedded G series GX-412TC, 1 GHz quad Jaguar core with 64 bit and AES-NI support, 32K data + 32K instruction cache per core, shared 2MB L2 cache
4 GByte DDR3-1066 (not expandable)
DB9 serial port, 2 USB 3.0 external + 4 USB 2.0 internal, three front panel LEDs, pushbutton
Board Size
6 x 6" (152.4 x 152.4 mm) - same as APU1 and ALIX2D13
Boot from SD card (internal sdhci controller), external USB or m-SATA SSD. 1 SATA + power connector. mSATA is shared with miniPCI express
Display Port
Enclosure Cutouts
3 x Ethernet, 1 x USB, 2 x SMA, 3 x LED, 1 x Reset Button
Ethernet Ports
3 Gigabit Ethernet channels (Intel i211AT)
Firewall, router, Custom application, Cluster Node and More
3 miniPCI express (J14 USB or mSATA, with SIM; J15 USB only, with SIM; J16: full miniPCI express, but no SIM, intended for wifi). GPIO header, optional I2C bus, COM2 (3.3V RXD / TXD)
Conductive cooling from the CPU to the enclosure using a 3 mm ALU heat spreader
Board Category
Return Warranty
Standard 30 Days
Manufacturer Warranty
2 Years Limited Warranty



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