For sale is my Sonnet Breakaway Box 850 T5 (part no. GPU-850T5) Thunderbolt 5 eGPU enclosure. It’s in practically brand new condition, with no scratches, dents or marks. It comes complete with the original box, foam inserts and all accessories, from a smoke-free, pet-free home.

No graphics card is included. This is the enclosure only.

It’s an easy way to give a laptop or mini PC desktop-class graphics for gaming, video editing or local AI, all through a single cable.

Key features:

• Thunderbolt 5: 80 Gbps bandwidth and PCIe 4.0 to the card
• Also works with Thunderbolt 4 and most USB4 Windows 11 computers (40 Gbps, PCIe 3.0)
• Charges your laptop: the host port supplies up to 100W
• 850W Enermax Cyber II 80 Plus Gold PSU with a native 12V-2x6 (600W) connector for RTX 40/50 series cards, plus standard PCIe 8-pin connectors
• Fits triple-slot cards up to 345 × 155 × 70 mm: NVIDIA RTX 30 series and newer, AMD RX 6000 series and newer
• Large, quiet, temperature-controlled 120mm fan
• Built-in Thunderbolt 5 dock:
  • 1x Thunderbolt 5 downstream port
  • 3x USB-A 10 Gbps
  • 1x 5 Gigabit Ethernet
• Thunderbolt certified, Windows 11 (24H2 or later)

What’s in the box:

• Breakaway Box 850 T5 enclosure
• Original Sonnet Thunderbolt 5 cable (240W / 120 Gbps)
• UK mains power cable
• Quick Start Guide
• Original retail box with foam inserts, plus the outer shipping carton

It will be posted in the original packaging, so it’s well protected. Any questions, just ask.