The Boingfire BFT4KB is a fully assembled, fanless network appliance kit built around the Boingfire BFT4 system board and enclosed in the BFCASET4S black anodized aluminum chassis. At its core is an Intel® Atom™ x5-E3940 quad-core processor paired with 4 GB onboard DDR4 memory, delivering an excellent balance of performance and efficiency for small to mid-size businesses, branches, and advanced home lab deployments.
The system features 4 × Intel I226-V 2.5GbE LAN ports, 2 × full-size mSATA slots, 4 × Mini-PCIe slots, and 1 × M.2 B-key slot, enabling powerful combinations of wired WAN, Wi-Fi, LTE/5G, and additional storage or expansion cards. A pre-installed mSATA SSD (capacity configurable at order time) provides reliable solid-state storage from day one, while integrated SIM support allows for multi-carrier cellular deployments.
Designed as a compact, fanless industrial platform, the BFT4KB typically consumes only around 7.2 W at 12 V in typical firewall/router scenarios, making it ideal for 24/7 edge use where silence, reliability, and low operating costs matter.
The platform is optimized for open-source networking and security stacks, including popular combinations based on FreeBSD, OPNsense®, and various Linux-based firewall/router distributions, providing integrators with a proven hardware foundation for their solutions.
Key Points
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Quad-Core Intel Atom Performance – the x5-E3940 quad-core CPU with AES-NI delivers strong VPN, routing, and security performance in a low-power envelope.
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True 2.5GbE Edge Platform – Four Intel I226-V 2.5GbE ports let you go beyond legacy 1GbE appliances, ideal for multi-gig internet and fast inter-VLAN routing.
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Expansion-Ready for LTE/5G & Wi-Fi – With 4 × Mini-PCIe and 1 × M.2 B-key slot, you can add multiple LTE/5G or Wi-Fi modules and build powerful SD-WAN or multi-WAN solutions.
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Multi-SIM Flexibility – Support for up to 4 SIM slots makes it easy to design multi-carrier, failover-ready deployments for global projects.
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Fanless & Low Power – Silent, fanless thermal design with typical consumption of 0.6 A @ 12 V (~7.2 W) keeps this box running cool and cost-effective 24/7.
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Industrial Build Quality – Rugged black anodized aluminum enclosure, compact 189 × 157 × 29 mm size, and long-life design for demanding environments.
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OEM & MSP Friendly – Custom logo printing, port labels, BIOS presets, OS pre-installation, and TPM 2.0 options make it easy to deliver fully branded appliances to your customers.
Typical Use Cases
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Next-Gen Firewall / UTM Appliance
Deploy as a central firewall or UTM with multi-WAN, VLANs, IDS/IPS, and VPN for SMB, branch, or managed customers. Four 2.5GbE ports map naturally to WAN, LAN, DMZ, and management networks. -
SD-WAN / Multi-WAN CPE
Combine wired WAN with multiple LTE/5G links, leveraging Mini-PCIe and M.2 modules and up to four SIMs for carrier redundancy and intelligent path selection at the edge. -
VPN Concentrator / Secure Remote Access
Use the Atom x5-E3940 with AES-NI to terminate IPsec, OpenVPN, or WireGuard-class tunnels for remote users, branch connectivity, and MSP-managed VPN services. -
IoT / Edge Gateway
Integrate field devices via Ethernet, serial, and GPIO, backhaul over wired or cellular connections, and apply unified security policies close to the data source. -
Managed Router for MSPs
White-label the BFT4KB with your brand and pre-installed OS, then deploy as a standardized, remotely managed CPE across your customer base.
Specifications:
| Processor (CPU) | Intel Atom x5-E3940, Quad-Core (AES-NI) |
|---|---|
| Core | 4 (Quad Core) |
| CPU Frequency | 1.6GHz (Base) / 1.8GHz (Burst) |
| RAM | 4GB Onboard DDR4 (Non-removable) |
| Storage | 2 x Full-size mSATA slots (SATA 3.0, 6Gb/s) |
| Display Port | 1 x Micro-HDMI |
| Resolution | 4096 x 2160 @ 60Hz (4K) |
| Ethernet Ports | 4 x RJ45 2.5GbE |
| Ethernet Controller | Intel I226-V |
| Storage | Software RAID (OS-dependent), 1 x pre-installed mSATA SSD (capacity selectable) |
| Watchdog | System Reset, Programmable 1–255 sec / 1–255 mins, Disable |
| Power Button | 1 x Power Button |
| Reset Button | Via watchdog trigger header (internal) |
| Cooling Fan | Fan-less |
| Serial Port | 1 x RJ45 External, 1 x TTL Serial Header |
| Power | 12V ±10% only |
| Typical Power | 0.6A @ 12V (7.2W) |
| Max. Power | 5A @ 12V (60W) |
| GPIO | 24 x GPIO (Digital I/O) |
| USB | 2 x USB 2.0 (Internal), 1 x USB 2.0, 1 x USB 3.0 (Type A) |
| Mini PCIe Slot | 4 x Mini-PCIe, 1 x M.2 B-key slot (4G/5G) |
| Operating Humidity | Up to 95% RH @ 40°C (Non-condensing) |
| Storage Humidity | Up to 95% RH @ 60°C (Non-condensing) |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to +85°C |
| Dimension | 189 x 157 x 29 mm (W x D x H) |
| Weight | 1.71 Lbs (Approx.) |
Each BFT4KB kit includes:
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Boingfire BFT4 system board with Intel® Atom™ x5-E3940 and 4 GB onboard DDR4
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BFCASET4S compact black anodized aluminum enclosure (pre-assembled)
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1 × mSATA SSD, pre-installed (capacity chosen at order time)
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12 V / 2 A DC power adapter with region-appropriate AC plug (e.g., NA/EU/UK, depending on SKU)
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All necessary internal cabling and connections for normal operation
Optional for projects, MSPs, and OEMs (on request):
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Custom enclosure logo and port label printing
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Alternative power adapter (e.g., 12 V / 5 A for heavy LTE/5G/Wi-Fi expansion)
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Pre-installed OS images (firewall, router, or other Linux/FreeBSD-based platforms)
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TPM 2.0 module, GPIO expansion boards, additional mSATA SSDs, and tailored BIOS presets
