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ShopOther Cables & AdaptersStarTech.com Thunderbolt 3 PCIe Expansion Chassis, External Enclosure with One PCI Express Slot, PCIe Box for Laptops/Desktops/All-In-Ones, 5K/4K Output Via TB3/DP Ports, TAA Compliant
StarTech.com Thunderbolt 3 PCIe Expansion Chassis, External Enclosure with One PCI Express Slot, PCIe Box for Laptops/Desktops/All-In-Ones, 5K/4K Output Via TB3/DP Ports, TAA Compliant
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StarTech.com Thunderbolt 3 PCIe Expansion Chassis, External Enclosure with One PCI Express Slot, PCIe Box for Laptops/Desktops/All-In-Ones, 5K/4K Output Via TB3/DP Ports, TAA Compliant

£253.01

£303.61 inc. VAT

Low Stock(7)MPN: TB31PCIEX16
🚚 Next-day delivery £4.95
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Key Features

StarTech.com Thunderbolt 3 PCIe Expansion Chassis, External Enclosure Box with 1x PCI-Express Slot, 5K/4K Output Via TB3/DP Ports, TAA
System bus extender
DP
65 Watt
for P/N: TB3DK2DPM2, TB3DOCK2DPPD, TB3DOCK2DPPU

Product Overview

AI-generated summary

If you’re trying to get a proper PCIe card into a laptop setup, this StarTech Thunderbolt 3 expansion chassis is one of the more sensible “it just works” options—especially at the price point (£253.42 ex-VAT). The big win here is convenience: dock your laptop (or use TB3 directly), drop in your PCIe card, and you’re not faffing about with internal chassis mods. In real life, that makes it great for things like adding a second network interface, a faster RAID/HBA for a lab/workload, or even a capture card setup where you want the stability of a real PCIe slot rather than USB adapters.

That said, it’s not magic, and you should only buy it if your workload suits TB bandwidth/latency. High-end graphics isn’t usually the best fit—TB3 isn’t a substitute for a full internal GPU connection—so don’t expect desktop-level performance for GPU acceleration. Also, compatibility matters: you’ll want to confirm your laptop’s Thunderbolt implementation and your specific PCIe card plays nicely in an external chassis environment. If you need a reliable way to add one PCIe card to a TB3-capable business laptop/All-in-One, this is a reasonable buy. If your goal is “make my laptop behave like a desktop for heavy compute/graphics,” I’d look elsewhere.

Specifications

Ports & interfaces

Connectivity technologyWired
Host interfaceThunderbolt 3
DisplayPorts quantity1
Thunderbolt 3 ports quantity2

Network

Ethernet LANN

Performance

Card reader integratedN
Data transfer rate40 Gbit/s
Product colourBlack
LED indicatorsPower
Rubber feetY

Cooling

Built-in fanY
Number of fans1 fan(s)
Bearing typeSleeve bearing
Fan diameter60 mm
Noise level24.55 dB

Power

Power source typeDC
AC input voltage100 - 240 V
Input current2 A
Output voltage12 V
Output current5.417 A

Software

Windows operating systems supportedWindows 10,Windows 10 Education,Windows 10 Education x64,Windows 10 Enterprise,Windows 10 Enterprise x64,Windows 10 Home,Windows 10 Home x64,Windows 10 IOT Core,Windows 10 IoT Enterprise,Windows 10 Pro,Windows 10 Pro x64,Windows 10 x64,Windows 11,Windows 11 x64,Windows 7,Windows 7 Enterprise,Windows 7 Enterprise x64,Windows 7 Home Basic,Windows 7 Home Basic x64,Windows 7 Home Premium,Windows 7 Home Premium x64,Windows 7 Professional,Windows 7 Professional x64,Windows 7 Starter,Windows 7 Starter x64,Windows 7 Ultimate,Windows 7 Ultimate x64,Windows 8,Windows 8 Enterprise,Windows 8 Enterprise x64,Windows 8 Pro,Windows 8 Pro x64,Windows 8 x64,Windows 8.1,Windows 8.1 Enterprise,Windows 8.1 Enterprise x64,Windows 8.1 Pro,Windows 8.1 Pro x64,Windows 8.1 x64
Mac compatibilityY
Mac operating systems supportedMac OS X 10.12 Sierra,Mac OS X 10.13 High Sierra,Mac OS X 10.14 Mojave,Mac OS X 10.15 Catalina,Mac OS X 11.0 Big Sur,Mac OS X 12.0 Monterey,Mac OS X 13.0 Ventura

Operational conditions

Operating temperature (T-T)5 - 35 °C
Storage temperature (T-T)-20 - 50 °C
Operating relative humidity (H-H)20 - 80 %

Sustainability

Sustainability complianceY

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