【Sonnet Technologies】eGPU Breakaway Box 750ex (discontinues)

Special Price HK$3,300.00 Regular Price HK$3,600.00
  • 1 x PCIe 3.0 x16 Slot
  • 1 x Thunderbolt 3 Port
  • Supports 2-Slot Wide, Full Length GPU
  • Built-In 750W Power Supply
  • 85-Watt Power Delivery
  • 4 x USB 3.2 Gen 1Type-A Ports
  • 1 x RJ45 Gigabit Ethernet Port
  • Mac and Windows Compatible

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Local Delivery

CHINAM is currently shipping within Hong Kong and specific countries only. We use local courier service as our delivery company. We do not support shipping items in a single order to multiple shipping addresses. To ship items to an additional address, please place a new order to us. Unless otherwise specified, delivery charge at the rate of HK$300 will be imposed on each delivery. We currently offer free delivery for each order over HK$1,000.

For remote areas or outlying islands delivery service, please contact our sales team via email - sales@chinam.com.hk

International Delivery

We will do our best to ship internationally to countries where we do not have sales representation. Please register with us, we’ll keep you updated and notify you when this is about to happen and become available in your region. Please note, at this time the customer is responsible for the duties and taxes imposed by their country.

For international shipping please contact our sales team via email - sales@chinam.com.hk

Deliver Time

  • Once your order has been handed over to the carrier for delivery, you will receive a shipment notification email with an estimated delivery date. Please note that it is not possible to expedite your delivery and receive your package earlier than the scheduled delivery date. Therefore, we are unable to accept requests for expedited delivery. Our carriers are unable to provide an exact time of day for your delivery. If you ordered multiple items, you may receive separate shipments.
  • All estimates are based on business days. We only make deliveries in the specified areas of Hong Kong from Monday to Sunday except on the first two days of the Lunar New Year and when typhoon warning signal No. 8 or above or black rainstorm warning is in force.
  • All rescheduling of delivery, additional purchases, new sales memos and amendments must be made 3 days before the scheduled delivery date. Otherwise, a double delivery charge will be incurred.
  • We may deliver the merchandise in one or more installments, and some of the merchandises may be delivered directly from suppliers. Any times and dates given for dispatch of merchandise, or the length of time that merchandise will take to be delivered, are only estimates. If we are unable to meet any stated dispatch or delivery dates or times we will inform you as to the progress of your order. You agree and accept that under no circumstances will we accept cancellation of order or refund.

Signature On Delivery

  • Most of our shipments contain valuable items. If you will not be in attendance to accept delivery of your purchase, consider shipping to someone you trust will be able to sign for your package. For your convenience, you may prefer to have your order delivered to your office address. If you choose this option, please include the name of your business in the address. Please note, if you choose this option, goods may be left with reception or the Mail Room.
  • As our carriers require a signature on delivery, the carrier will leave a calling card if you are not at home. Please contact the carrier to reschedule delivery.
  • For postal deliveries, no signature is required and order status tracking is not available.
  • Delivery failure due to no one answering the door upon the arrival of goods at the appointed time, or to circumstantial limitations such as the entrance being too small, will require a rescheduled delivery and therefore incur double delivery charges.
  • We will deliver the merchandise ordered by you to the address you give us for delivery at the time you make your order through our staff or a third party provider. You agree to present your photo identification upon request when you acknowledge receipt of the merchandise. The merchandise shall be, and shall be deemed to be, delivered and accepted by you when the merchandise are delivered to the address you give us for delivery. You agree and accept that we are entitled, at our option, to charge you additional costs or cancel your order in the event of your failure to accept delivery for whatever reasons.


  • You will become the owner of the merchandise you have ordered when they have been delivered to you. Once merchandise has been delivered to you they will be held at your own risk and we will not be liable for the loss or damage.
  • You may not export any products purchased at CHINAM online store. We sells and ships products to end-user customers only. Notwithstanding order confirmation, CHINAM may cancel any order where it has reasonable grounds to believe the product is not being purchased for end use.
  • If there is any inconsistency or ambiguity between the English version and the Chinese version, the English version shall prevail.
  • We reserve the final right to terminate or alter the above terms and conditions. In the event of any dispute, our decision shall be final and conclusive.
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Render projects and run other hardware-demanding applications with the eGPU Breakaway Box 750ex Enclosure from Sonnet. This external enclosure is designed to accommodate various PCIe 3.0 x16 equipped AMD and NVIDIA graphics cards, allowing you to turn your Thunderbolt 3 enabled notebook into a workstation suitable for running various photo- and video-editing software. The 750ex eGPU is ideal for notebook users who wish to explore their creative side or enjoy some graphically intensive games, without purchasing a whole new system.

The built-in 750-watt power supply gives you two 8-pin (6+2 pin) connectors, allowing you to take advantage of power-hungry GPUs and giving you the ability to charge your notebook with 85-watt power delivery. A wide range of graphics cards can be installed into the 750ex including two-slot, full-length cards such as the AMD Radeon VII, RX, RX Vega, NVIDIA GeForce RTX series, TITAN, and Quadro models. Additionally, this unit includes four USB 3.1 Gen 1 Type-A ports so you can connect peripherals like external drives and controllers. An RJ45 Gigabit Ethernet port is also available for hardwired network connectivity.

Enhanced Graphics Performance
Connect a high-performance GPU to your computer with Thunderbolt 3 technology, significantly improving editing, rendering, color grading, animation, and special-effects performance. While Windows supports both NVIDIA and AMD model GPUs, Mac devices can only support AMD brand cards.

Thunderbolt 3 Connection
Built upon the Thunderbolt 3 foundation, the 750ex eGPU ensures up to 2750 MB/s of PCIe bandwidth is dedicated to the installed card, giving you the power you need to ensure proper workflow. Additionally, you can connect several eGPU Breakaway Boxes to slash task times on supported applications and handle up to 8K resolution workflow efficiently.

Expansive Utility
The 750ex includes four USB 3.1 Gen 1 Type-A ports so you can connect peripherals like external drives and controllers. An RJ45 Gigabit Ethernet port is also available for hardwired network connectivity.

GPU Compatibility
The 750ex eGPU supports a wide range of AMD and NVIDIA GPUs as well as non-GPU PCIe cards, including pro-audio, DSP, and pro video transcoding cards, allowing you to increase productivity within various industries.

Cool and Quiet
The large variable-speed temperature-controlled fan quietly and effectively cools the installed card and can be comfortably used in noise-sensitive work environments.

Gaming Support
Enjoy a wide variety of graphically demanding games on your notebook that would otherwise deliver a poor experience. Accelerated graphics can be displayed on one, two, or more external monitors or on your notebook's own display panel. The design of the 750ex eGPU allows you to upgrade the graphics card in the box to keep up with the latest GPU technology, which is a feature unavailable in gaming-focused laptops.

Windows and Mac Compatible
The eGPU 750ex is compatible with macOS Big Sur as well as 10.13.6+, 10.14.6+, and 10.15.7+, giving you access to various AMD products line for optimal performance. Windows 10 (64-bit) version 1809 and later can support select AMD and NVIDIA brand graphics cards, ensuring maximum compatibility suitable for your workload.

Sonnet Box 750EX Specification


Expansion Slots 1 x PCIe 3.0 x16
Supported PCI Card Sizes Full-Height, Full-Length, Double-Width
Maximum GPU Length 12.3" / 312 mm
System Connection Thunderbolt 3
Inputs/Outputs 1 x USB-C (Thunderbolt 3)
4 x USB-A
1 x RJ45 (Gigabit Ethernet)
Data Transfer Rates Thunderbolt 3: 40 Gb/s
OS Compatibility Windows 10 to 11
macOS 10.13.6 to 12.2
*As of December, 2022: Check with manufacturer for the most up-to-date compatibility


Power Source Type 1 x 750 W Internal PSU
PCIe Connectors 2 x 6+2-Pin
AC Input Power 100 to 200 VAC, 50 / 60 Hz
Port Power Delivery 85 W Max


Fans 1


Operating Temperature 32 to 95°F / 0 to 35°C


Form Factor Desktop
Certifications RoHS 3, IEC62368-1, IEC62368-2
*as per Manufacturer
Status Monitoring LED Indicator
Dimensions 13.38 x 8 x 7.25" / 33.99 x 20.3 x 18.41 cm
Weight 7.1 lb / 3.2 kg
  • Sonnet eGPU Breakaway Box 750ex Enclosure
  • Power Cable
  • Thunderbolt 3 Cable
  • Limited 2-Year Manufacturer Warranty
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