Sophos SG 125 rev.2 1U Hardware Firewall/VPN Appliance – Tested Working + 12V Power Adapter
Up for sale is a clean, tested working Sophos SG 125 rev.2 security appliance. This is the popular compact model (often called “desktop 1U”) with 8x Intel Gigabit Ethernet ports, low power draw, and solid build quality. Manufactured in September 2015.
Key Specifications
• Model: Sophos SG 125 rev.2
• CPU: Intel Atom C2358 (Rangeley) dual-core @ 1.7 GHz
• RAM: 4 GB DDR3 (DIMM)
• Storage: Integrated 64 GB SSD (for logs/quarantine)
• Network: 8 × 1 GbE copper ports (Intel i211 + integrated)
◦ Labeled: eth0 (LAN), eth1 (WAN), eth2 (DMZ), eth3 (HA), eth4–eth7
• Rear I/O: 2× USB 2.0, 1× RJ45 COM (serial console), 1× VGA, DC power input
• Power: External 12V DC 3.33A (40W max) – very efficient (~12W idle / ~26W full load)
• Form Factor: Compact desktop / 1U rackmount capable (rack ears/kit not included)
• Dimensions: Approx. 288 × 187 × 44 mm
• Serial Number: S1601A4EC159E60
• Manufactured: September 2015 (Taiwan)
What’s Included
• Sophos SG 125 rev.2 appliance (clean white chassis)
• Matching FSP Group 12V 3.33A power adapter (correct OEM-style brick)
• Nothing else (no rack ears, no cables, no antennas — this is the non-wireless “SG 125” model)
Condition & Testing
• Tested working — powers on cleanly and is fully functional at the hardware level.
• Good cosmetic condition with only minor signs of prior use (see photos).
• All ports, LEDs, and fans appear normal.
• Internal SSD and 4 GB RAM are present and detected.
Important Notes
This is hardware only. It originally shipped with Sophos UTM 9.x. Full UTM features require a valid Sophos subscription/license, which is not included and may be difficult/expensive to obtain for this legacy 2015-era model.
Excellent repurposing candidate for:
• OPNsense / pfSense / OpenWrt / custom Linux router builds
• Homelab firewall, VPN gateway, or network appliance projects
• Low-power always-on device (great power efficiency)
Ideal For
Homelabbers, small office/branch firewall replacement, network security projects, or anyone needing a reliable 8-port Intel GbE x86 appliance with low power consumption.
Photos show the exact unit you will receive (front, rear, label, and included power adapter).
Fast shipping with care. Questions welcome — happy to provide more details or additional photos.
Thanks for looking!