






⚡ Expand Your Workspace, Elevate Your Game
The StarTechcom Thunderbolt 3 PCIe Expansion Chassis is a sleek, driverless external enclosure that adds a single PCIe 3.0 x16 slot to Thunderbolt 3/4 laptops and desktops. It supports ultra-high-resolution 5K/4K displays at 60Hz, delivers up to 40Gbps bandwidth, and includes a universal 65W power adapter with active cooling. Compatible with macOS, Windows, and Linux, this TAA-compliant chassis unlocks professional-grade expandability for video capture, high-speed networking, and NVMe storage, making it an essential upgrade for power users on the go.



| Brand | StarTech |
| Product Dimensions | 27.94 x 14.22 x 8.13 cm; 1.62 kg |
| Item model number | TB31PCIEX16 |
| Manufacturer | StarTech.com |
| Series | Thunderbolt 3 PCIe Expansion Chassis with DisplayPort - PCIe x16 |
| Colour | Black |
| Hard Disk Description | thunderbolt 3 |
| Hard Drive Interface | USB-C |
| Graphics Card Interface | PCI-Express x16 |
| Number of USB 3.0 Ports | 1 |
| Wattage | 65 watts |
| Hardware Platform | Mac |
| Operating System | Windows® 7, 8, 8.1, 10, 11 macOS 10.12 - 10.15, 11.0, 12.0, 13.0, 14.0 |
| Are Batteries Included | No |
| Lithium Battery Weight | 7 Kilograms |
| Item Weight | 1.62 kg |
| Guaranteed software updates until | unknown |
A**I
Worries with universal audio UAD2 cards
I bought this to power my UAD2 card when I moved from desktop to laptop for my studio.It works perfectly and was cheaper than the recommended products 👍🏼
T**E
Works with Yamaha AIC128D
This should be clearly written that this doesn't work with GPUs to become an external gpu enclosure - but should be fairly obvious due to its lack of power options on this front.That said, I use it for driving an AIC128D Dante Accelerator card, and it works fine for this.
A**0
Good eGPU compact solution for creative professionals
I am using StarTech.com TB31PCIEX16 as the eGPU for my MacBook Pro laptops 2014/2015to run Adobe Photoshop and Corel Painter with my 32inch 4K monitor.Product works perfectly with my old Mac thunderbolt 2 laptops.It also connects well via Apple Thunderbolt Monitor thunderbolt port andvia thunderbolt 3 dock in device-daisy chaining.The Chassis also improves graphic performance and internetbrowsing experience on my new windows 10 laptop with a built-in Intel UHD 620 Graphics.WebGL Aquarium Test showed 90% GPU boost across all my laptops.I installed the AMD Radeon RX550 graphics card that does not require an external power supply.The fan is very noisy on Chassis so I replaced it with Noctua NF-A6x25 Fan, 3-Pin 60mm.I also bought longer thunderbolt 3 cable as included cable is very short.
A**R
Works great. Power is loose, however.
I use this onsite for live stream production, great piece of kit. The only thing I dislike is how loose the power cable is, one light tug and it'll come right out.
W**Y
Not for graphics cards
This statement should be in bold. this is for drives and alike not graphics cardsgood build quality and multiple adapters for power supplied with
Trustpilot
2 weeks ago
2 weeks ago