Ubiquiti UniFi Flex 10 GbE (USW-Flex-XG)

The UniFi USW-Flex-XG is a compact 5-port 10GbE Layer 2 switch with four 10GbE RJ45 ports, PoE+ input, USB-C power option, fanless operation, and advanced UniFi Controller-based management.

Here are the detailed specifications for the UniFi USW‑Flex‑XG (aka Flex 10 GbE)

📦 Overview

• Model: USW‑Flex‑XG (UniFi Flex 10 GbE)

⚙️ Ports & Performance

• 1 × 1 GbE RJ45 (PoE+ input)
• 4 × 10 GbE RJ45 (1/2.5/5/10 GbE autonegotiating)
• Switching capacity: 82 Gbps
• Non-blocking throughput: 41 Gbps
• Forwarding rate: ~61 Mpps

🔌 Power & Cooling

• Powered via:
  • PoE+ port (50–57 V DC, 25 W) or
  • USB‑C (5 V ⎓ 5 A, external adapter included)
• Max power consumption: 25 W (excluding PoE passthrough)
• Cooling: Fanless, passive airflow through polycarbonate enclosure

🔄 Layer 2 Features

• Supports VLANs (up to 1,000), LACP port aggregation, STP/RSTP, IGMP snooping, jumbo frames
• Security features: ACLs (MAC/IP-based), DHCP snooping/guarding, port mirroring, flow control, storm/broadcast limiting, voice VLAN, LLDP-MED, loop protection

🏗️ Hardware & Physical

• Dimensions: 135 × 185 × 32 mm (5.3 × 7.3 × 1.3″)
• Weight: ~1.2 kg (2.7 lb)
• Enclosure: White polycarbonate
• ESD/EMP protection: ±16 kV air / ±12 kV contact

🌡️ Environment & Compliance

• Operating temp: –5 °C to +45 °C
• Humidity: 10–90% non-condensing
• Certifications: CE, FCC, IC; NDAA-compliant

🔧 Management

• Managed via: UniFi Network Controller v6.1.67 or later (Ethernet in-band)
• Functional controls: LED indicators, reset button

🧠 Community Notes

• Boot/Link delays: Some users report slow boot and link negotiation issues, requiring cable or firmware checks
• Thermal & reliability: Can run warm; may cause link instability under heavy load

✅ Quick Specs Summary

Datasheet