Micro Firewall Mini PC N355-4LAN - 4 x 2.5GbE Twin Lake N150

In this review the CWWK Micro Firewall Appliance (N355-4LAN, 16G RAM 256G SSD) is evaluated as a compact, network-focused mini PC for small offices and home labs. The bottom line: it is best for users who need multiple high-speed LAN ports and a capable low-power CPU for routing, VPN and virtualization tasks. The reviewer found the Twin Lake N150 CPU, DDR5 memory support and four 2.5GbE I226-V ports deliver a practical balance of performance and connectivity for firewall, VPN gateway or light NAS roles, while the platform remains upgradeable via M.2 NVMe and SO-DIMM slots.

Key Features

• Twin Lake N150 CPU: A 4-core N150 with bursts up to 3.6GHz provides responsive packet handling and light virtual machine use without excessive power draw.
• 4 x 2.5GbE I226-V ports: Four multi-gig Ethernet ports make this unit ideal for firewall routing, bridging multiple subnets or providing faster LAN throughput than 1GbE devices.
• DDR5 upgradability: One SO-DIMM DDR5 slot supports up to 32G at 4800MHz (compatible with faster DIMMs) so multitasking and caching improve with memory upgrades.
• M.2 NVMe storage: The M.2 x4 NVMe slot delivers fast local storage for OS and logs, and can be expanded to multiple M.2 or mSATA via adapter for extra capacity.
• Dual 4K display outputs: HDMI plus DisplayPort provide 4K dual-screen output for local console use, monitoring or appliance setup without additional video cards.
• Wireless expansion: An M.2 Key-E slot supports WiFi6/Bluetooth modules for optional wireless connectivity alongside wired networking.

Who It's For

This mini PC suits small business IT admins, network hobbyists and home lab users who need a dedicated firewall or VPN gateway with multi-gig wired ports and modest CPU power. It is also a good fit for anyone who wants to run open-source firewall distributions like OPNsense, OpenWrt or install Windows or Linux for appliance tasks.

It is not the best choice for users who need high-end workstation graphics, heavy database servers, or very large-scale virtualization clusters; those workloads require stronger CPUs, more RAM slots and larger storage arrays than this compact appliance offers.

Pros & Cons

Pros

• Multiple 2.5GbE ports give real-world network throughput advantages over 1GbE devices for LAN and WAN aggregation.
• Support for DDR5 and NVMe means the unit is upgradeable and stays relevant as demands grow.
• Compact chassis with dual 4K outputs and numerous USB ports makes it versatile for appliance and console use.

Cons

• Single SO-DIMM and single main M.2 slot limit maximum on-board expansion without adapters or external devices.
• Not intended for heavy compute or GPU-accelerated tasks, so users needing high CPU cores or graphics should look elsewhere.

Specifications

Our Verdict

The CWWK N355-4LAN mini PC is a strong value for anyone needing a compact firewall or VPN gateway with multi-gig wired connectivity and upgradeable DDR5 and NVMe storage. It excels in networking roles and home lab setups where four 2.5GbE ports and flexible software choices matter; those needing heavy compute or many internal expansion bays should consider larger systems.

Frequently Asked Questions

Can this run OPNsense or other firewall OS?
Yes. The unit supports open-source firewall distributions such as OPNsense and OpenWrt, as well as mainstream OS installs.

How many network ports and what speed?
It includes four 2.5GbE I226-V network ports, providing multi-gig wired connectivity for LAN/WAN use.

Is WiFi included?
WiFi is optional via an M.2 Key-E slot that supports WiFi6/Bluetooth modules for wireless expansion.