



CWWK S3 4×2.5GbE + Dual 10GbE SFP+ Firewall Mini PC

The CWWK S3 is a dual 10GbE SFP+ firewall mini PC based on an Intel N-Series platform. It combines four onboard Intel i226-V 2.5GbE RJ45 ports with two Intel 82599ES 10GbE SFP+ interfaces through the PCIe expansion architecture.
Intel N100, N150, N200 and N305 Processor Options
The S3 supports Intel N100, N150, N200 and Core i3-N305 processor configurations for firewall routing, 10GbE networking, VPN services, VLAN segmentation, virtualization and multi-service network environments.
Four Intel i226-V 2.5GbE and Dual 10GbE SFP+ Ports
The S3 combines four Intel i226-V 2.5GbE RJ45 interfaces with two 10GbE SFP+ ports controlled by Intel 82599ES, providing both multi-gigabit copper networking and high-speed SFP+ connectivity.
Shared N-Series Motherboard with DDR5 and PCIe Expansion
The S3 uses the same Intel N-Series motherboard platform as the CWWK F13. The motherboard provides four onboard Intel i226-V 2.5GbE ports, one DDR5 SO-DIMM slot, NVMe and SATA storage interfaces and a PCIe expansion slot for the dual 10GbE SFP+ adapter.
- 4 × onboard Intel i226-V 2.5GbE
- 1 × DDR5 SO-DIMM, up to 32GB
- 1 × M.2 NVMe storage interface
- 1 × SATA 3.0 interface
- PCIe x8 physical expansion slot
- Mini-PCIe / MPE expansion interface
PCIe x8 Physical Slot with PCIe 3.0 x4 Signal
The S3 motherboard uses a physical PCIe x8 slot with a PCIe 3.0 x4 electrical connection. The slot is used for the Intel 82599ES dual 10GbE SFP+ expansion adapter.
Intel 82599ES Dual 10GbE SFP+ Expansion Card
The S3 uses an Intel 82599ES-based PCIe network expansion card to provide two 10GbE SFP+ interfaces. These ports complement the motherboard's four Intel i226-V 2.5GbE RJ45 interfaces for higher-bandwidth network links.
CPU Heatsink and Turbo Fan Active Cooling
The S3 uses a dedicated CPU heatsink and turbo cooling fan to actively cool the Intel N-Series processor. The fan is part of the CPU thermal system rather than the chassis itself.
Because the supported N100, N150, N200 and N305 processors are low-power platforms, the standard CPU cooling system is generally sufficient for typical firewall, routing and networking workloads.
Large Aluminum Chassis and Internal Layout
5.19 × 6.09 × 2.52 in
The S3 uses CWWK's large aluminum chassis to accommodate the motherboard, Intel 82599ES dual 10GbE SFP+ expansion adapter, CPU heatsink and turbo cooling fan, and front and rear I/O assemblies.
The exploded structure shows the aluminum top and bottom covers, PCIe 10GbE expansion assembly, CPU cooling components, motherboard and front and rear I/O shields.
VESA Mounting for Flexible Installation
The S3 supports VESA mounting for compatible wall, display-back, mounting-plate and other space-efficient installations, providing additional flexibility for firewall, routing and 10GbE network deployments.
OPNsense, pfSense, OpenWrt and Proxmox Compatibility
The S3 supports OPNsense, pfSense, OpenWrt, Proxmox, Linux, Ubuntu, Debian, ESXi, Windows and other compatible x86 operating systems. Its combination of four 2.5GbE RJ45 ports and dual 10GbE SFP+ interfaces is suitable for firewall routing, high-speed uplinks, VLAN segmentation, VPN gateways and virtualized network services.
Front and Rear I/O Connectivity
The S3 provides four Intel i226-V 2.5GbE RJ45 ports, two Intel 82599ES 10GbE SFP+ interfaces and additional display, USB, system management and power connections.
Technical Specifications
| Model | CWWK S3 |
|---|---|
| Processor Options | Intel N100, N150, N200 and Core i3-N305 |
| 2.5GbE Ethernet | 4 × Intel i226-V 2.5GbE RJ45 ports |
| 10GbE Ethernet | 2 × 10GbE SFP+ ports |
| 10GbE Controller | Intel 82599ES |
| Memory | 1 × DDR5 SO-DIMM, up to 32GB |
| NVMe Storage | 1 × M.2 NVMe PCIe 3.0 x1 |
| SATA Storage | 1 × SATA 3.0 |
| PCIe Slot | PCIe x8 physical slot, electrically PCIe 3.0 x4 |
| Other Expansion | Mini-PCIe / MPE interface |
| Chassis | Large aluminum chassis without external cooling fins |
| Dimensions |
131.7 × 154.6 × 63.9 mm 13.17 × 15.46 × 6.39 cm 5.19 × 6.09 × 2.52 in |
| CPU Cooling | Dedicated heatsink and turbo cooling fan |
| Optional Chassis Fan | Supports an optional 80 × 80 × 10 mm 8010 fan for additional internal airflow; generally not required for typical N-Series use |
| VESA Mounting | Supported |
| Operating Systems | OPNsense, pfSense, OpenWrt, Proxmox, Linux, Ubuntu, Debian, ESXi and Windows |




