The Sonnet Breakaway Box 850 T5 is Sonnet's first Thunderbolt 5 eGPU enclosure, sized for triple-wide 13.5" graphics cards drawing up to 600W from its internal 850W universal PSU. The 80 Gbps upstream Thunderbolt 5 connection delivers 100W of Power Delivery back to a compatible Windows 11 host, while an integrated Thunderbolt dock adds a second TB5 port for 15W PD daisy-chaining, three 10 Gb/s USB 3.2 Gen 2 Type-A ports (each providing 7.5W for USB NVMe SSDs), and a Realtek 5GbE RJ-45 for multi-gig wired networking. Mains power arrives via an IEC C14 inlet.
Sonnet’s 850W Thunderbolt 5 eGPU enclosure with triple-wide GPU support, 100W upstream PD, integrated TB5 dock, 3x USB-A 10Gb/s, and 5GbE.
Device Information
- Manufacturer
- Sonnet
- Release Year
- 2025
- Model Number
- GPU-850-T5
- Category
- eGPU Enclosure
Available Ports
| Connector | Quantity | Label | Notes |
|---|---|---|---|
| Thunderbolt 5 (USB-C) | 1 | Thunderbolt 5 (Upstream) | 80 Gbps upstream to host. Delivers 100W upstream PD. |
| Thunderbolt 5 (USB-C) | 1 | Thunderbolt 5 (Downstream) | Integrated dock. 15W PD for daisy-chained TB5 peripherals. |
| USB Type-A (USB 3.2 Gen 2) | 3 | USB-A 10Gb/s | 10 Gb/s. Each port provides up to 7.5W — suitable for USB NVMe SSDs at full speed. |
| RJ-45 (100BASE-TX Fast Ethernet) | 1 | 5GbE LAN | Realtek RTL8157 5G/2.5G/1G/100M multi-gig RJ-45. Not in Cablebabe approved list — flagged for manual review. |
| IEC C14 (3-Pin Power Inlet) | 1 | AC Mains Inlet | Internal 850W universal PSU (100-240 VAC). Accepts a standard C13 kettle cord. |
Notes & Compatibility
5GbE port uses Realtek RTL8157 controller and auto-negotiates 5G/2.5G/1G/100M — represented here as a proprietary 5GBASE-T entry because 5GbE is not in the approved connector list. Flag for manual review. PCIe slot and GPU power harness are internal and not listed.
Common questions
How many ports does the Sonnet Breakaway Box 850 T5 eGPU (2025) have?
The Sonnet Breakaway Box 850 T5 eGPU (2025) has 7 ports in total: 2 × Thunderbolt 5 (USB-C), 3 × USB Type-A (USB 3.2 Gen 2), 1 × RJ-45 (100BASE-TX Fast Ethernet) and 1 × IEC C14 (3-Pin Power Inlet).
What kinds of ports does the Sonnet Breakaway Box 850 T5 eGPU (2025) have?
By connector family, the Sonnet Breakaway Box 850 T5 eGPU (2025) has 3 USB, 2 Thunderbolt, 1 Network and 1 Power.
How many USB ports does the Sonnet Breakaway Box 850 T5 eGPU (2025) have?
The Sonnet Breakaway Box 850 T5 eGPU (2025) has 3 USB ports: 3 × USB Type-A (USB 3.2 Gen 2). It also has 2 Thunderbolt ports (2 × Thunderbolt 5 (USB-C)), which use the USB-C connector shape.
What video connections does the Sonnet Breakaway Box 850 T5 eGPU (2025) have?
The Sonnet Breakaway Box 850 T5 eGPU (2025) has 2 ports that can carry video: 2 × Thunderbolt 5 (USB-C). Its Thunderbolt 5 (USB-C) ports support DisplayPort Alt Mode, so video travels over the USB-C connector itself with a suitable cable or adapter.
How is the Sonnet Breakaway Box 850 T5 eGPU (2025) powered?
The Sonnet Breakaway Box 850 T5 eGPU (2025) has a dedicated power connector: 1 × IEC C14 (3-Pin Power Inlet). Thunderbolt 5 (USB-C) carries up to 100 W. Thunderbolt 5 (USB-C) carries up to 15 W. USB Type-A (USB 3.2 Gen 2) carries up to 7 W.
Does the Sonnet Breakaway Box 850 T5 eGPU (2025) have HDMI?
No. The Sonnet Breakaway Box 850 T5 eGPU (2025) has no HDMI port. It does carry video over 2 × Thunderbolt 5 (USB-C).
Does the Sonnet Breakaway Box 850 T5 eGPU (2025) have a headphone jack?
No. The Sonnet Breakaway Box 850 T5 eGPU (2025) has no 3.5 mm headphone jack. Its audio connections are 2 × Thunderbolt 5 (USB-C).
