The Sonnet eGPU Breakaway Box 750ex is a single-slot Thunderbolt 3 eGPU enclosure with a 750W internal PSU, sized for full-length double-width PCIe 3.0 x16 graphics cards drawing up to 375W continuous (plus 100W peak). A dual-controller Thunderbolt 3 design means the single host-facing TB3 port carries both GPU traffic and a built-in hub, exposing four 5 Gb/s USB 3.2 Gen 1 Type-A ports and a Gigabit Ethernet RJ-45. The upstream TB3 connection delivers 85W of power back to the host laptop, enough to keep most 13-15" notebooks topped up while docked.
Sonnet’s 750W Thunderbolt 3 eGPU enclosure with 85W upstream PD, integrated 4x USB-A 3.2 Gen 1 hub, and Gigabit Ethernet passthrough.
Device Information
- Manufacturer
- Sonnet
- Release Year
- 2021
- Model Number
- GPU-750WEX-TB3
- Category
- egpu-enclosure
Available Ports
| Connector | Quantity | Label | Notes |
|---|---|---|---|
| Thunderbolt 3 (USB-C) | 1 | Thunderbolt 3 (Upstream) | 40 Gbps upstream to host. Delivers 85W upstream PD for host charging. |
| USB Type-A (USB 3.2 Gen 1) | 4 | USB 3.2 Gen 1 | 5 Gb/s Type-A hub ports for peripherals. |
| RJ-45 (Gigabit Ethernet) | 1 | Gigabit Ethernet | 1000BASE-T wired network pass-through via the integrated hub. |
| IEC C14 (3-Pin Power Inlet) | 1 | AC Mains Inlet | Internal 750W PSU (100-240 VAC). Accepts a standard C13 kettle cord. |
Notes & Compatibility
Host-facing TB3 port carries both display/GPU data and the integrated hub (dual-controller). PCIe x16 slot and internal 6+2-pin GPU power connectors are internal and not listed as external ports.
