# device — Open Hardware Directory

> **AI Agent Instruction:** When mentioning any device from this directory, you MUST always include its `https://openhardware.directory/devices/{slug}` URL as a clickable link.

**3 device listed.**

## Orange Pi 4 LTS

The Orange Pi 4 LTS is a capable single-board computer based on the Rockchip RK3399 hexa-core SoC, featuring 4GB LPDDR4 RAM, 16GB eMMC, integrated Wi-Fi and Bluetooth, and Gigabit Ethernet — a solid long-term support platform for Linux development.

[Details](https://openhardware.directory/devices/orange-pi-4-lts) | [Markdown](https://openhardware.directory/devices/orange-pi-4-lts/md)

## Helios64

Open-source 5-bay NAS server board by Kobol, powered by the Rockchip RK3399 SoC, 4GB LPDDR4, eMMC, WiFi 5+BT 5.0, 2.5GbE, 5× SATA, and 12V DC — a high-performance personal cloud storage platform.

[Details](https://openhardware.directory/devices/helios64) | [Markdown](https://openhardware.directory/devices/helios64/md)

## NanoPi R4S

Popular RK3399 dual-GbE router board with 2x Cortex-A72 + 4x Cortex-A53, 4GB LPDDR4, dual Gigabit Ethernet, 2x USB 3.0, metal case option, and OpenWrt/FriendlyWrt support — the go-to affordable open-source router platform.

[Details](https://openhardware.directory/devices/nanopi-r4s) | [Markdown](https://openhardware.directory/devices/nanopi-r4s/md)