What type of materials is this adapter made of?

The adapter is made of aluminum and steel.

What is included in the package when I purchase this adapter?

The package includes 1 Thunderbolt 3 PCIe expansion box, 1 Thunderbolt 3 cable, 4 rubber feet, 1 universal power adapter (NA/JP, UK, EU, ANZ), 1 PCI Express x4 to M.2 PCIe SSD Adapter, 1 low-profile bracket, 1 full-profile bracket (pre-installed), 2 quick-start guides, and 1 SSD standoff and installation screw.

Is this device compatible with all Thunderbolt 3 computers?

Yes, the device is compatible with Thunderbolt 3 equipped computers that have a Thunderbolt 3 port.

Is it complicated to install and set up this adapter?

No, it is not complicated to install and set up this adapter. It can be assembled and connected in minutes using only a screwdriver, with no software or drivers required.

Can I use this adapter to improve the performance of my computer?

Yes, this adapter can improve the performance of your computer by externally adding a PCIe M.2 SSD via the Thunderbolt 3 chassis, enhancing storage performance and expanding capacity.

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StarTech BNDTB4M2E1 Thunderbolt 3 to M.2 PCIe Adapter - External PCIe Enclosure / Chassis plus Card - with DisplayPort Monitor Port - PCIe SSD

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Add a PCIe M.2 SSD to your TB3 computer via the TB3 chassis
Swap the PCIe card
Assemble with a screwdriver
Thunderbolt 3 to PCIe / Thunderbolt 3 to PCIe x16 adapter / Thunderbolt 3 to ssd / Thunderbolt 3 to m.2 adapter / External PCI express enclosure / External PCI express slot / External PCI slot / External PCIe enclosure / PCIe expansion slot / PCIe slot / Thunderbolt 3 expansion chassis / Thunderbolt 3 PCIe card / Thunderbolt 3 PCIe expansion chassis / Thunderbolt 3 PCIe SSD

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Thunderbolt 3 to PCIe M.2 adapter - Chassis + Card

Model
Brand	StarTech.com
Model	BNDTB4M2E1

Details
Color	Black
Type	Enclosure
AC Adapter	Yes
Material	Aluminum / Steel
Thunderbolt 3	Yes
Internal Interface	1 x PCI Express x4 Male 1 x PCI Express x16 Female
External Interface	1 x M.2 (NGFF, M-Key, PCIe x4) 2 x Thunderbolt 3 USB-C Female 1 x DisplayPort Female
Fan	1 x 92mm Sleeve Bearing Fan
Power	Center Tip Polarity: Positive Input Current : 2A Input Voltage : 100 ~ 240 AC Output Current: 5.417A Output Voltage: 12 DC Plug Type: N Power Consumption (In Watts): 65W Power Source: AC Adapter Included
Specifications	Maximum Data Transfer Rate : 40 Gbps (Thunderbolt 3) Type and Rate: Thunderbolt 3 - 40 Gbit/s This Thunderbolt 3 to PCIe M.2 adapter lets you take advantage of the speed of PCIe solid-state drives, connected externally to your Thunderbolt 3 desktop or laptop computer. The adapter combines the StarTech.com Thunderbolt 3 PCIe Expansion Chassis (TB31PCIEX16) and the M.2 PCIe SSD adapter card ( PEX4M2E1), giving you a DisplayPort output and an additional Thunderbolt 3 port. Boost your system speed and performance Get ultra-fast data access by adding this PCIe M.2 SSD adapter externally to your existing Thunderbolt 3 computer, using the Thunderbolt 3 chassis - improving your storage performance and expanding overall capacity. The adapter supports PCIe M.2 SSDs (NVMe and AHCI): 2242, 2260, 2280, and 22110 drives. Extend your workstation Connect additional displays through the chassis’ dedicated DisplayPort output and second Thunderbolt 3 (USB-C) port (USB-C video adapter may be required). With two extended displays, you can multitask effortlessly, avoiding the hassle of repositioning open windows or programs repeatedly throughout your workday. Install with ease You can assemble and connect the adapter in minutes. Put it together using only a screwdriver then plug and play with no software or drivers required.

Compatibility
Operating Systems Supported	Thunderbolt 3 equipped computer with a Thunderbolt 3 port.

Features
Features	The Thunderbolt 3 m.2 enclosure lets you take advantage of the speed and size of PCIe M.2 internal solid-state drives, connected externally to your Thunderbolt 3 desktop or laptop computer Boost performance and productivity by externally adding a PCIe M.2 SSD to your Thunderbolt 3 computer via the Thunderbolt 3 chassis Create an efficient work station with the chassis’ extra display options, using the DisplayPort output and additional Thunderbolt 3 port Upgrade your peripherals without having to upgrade your chassis, by just switching out your PCIe card Assemble and install easily with just a screwdriver and no software Note: The expansion chassis does not support video cards. This expansion chassis does not provide full power delivery but will provide 15W of power, resulting in a slow charge to some laptops, such as MacBook Pro. When the dock is connected to your host laptop, a charging icon may appear on your laptop's screen. This is only sufficient enough to charge your laptop in sleep state, and charging will require an extended time period. 5K support can only be achieved using a Thunderbolt 3 5K monitor. DisplayPort 5K monitors will not work with this expansion chassis. A 4K-capable display is required to achieve 4K x 2K resolution (4K is also known as 4K x 2K). Certain monitors may be limited to 4K at 30Hz when connecting through DisplayPort. These monitors include the following models: Dell P2715Q, Viewsonic VX2475Smhl-4K, Philips 288P6LJEB, LG 31MU97C-B, Asus PB287Q (these models will need to be set to 4K at 30Hz). When connecting a display to one of the Thunderbolt 3 USB-C ports, a USB-C video adapter might be required depending on the input of your display. Secondary Thunderbolt 3 port can also be used to connect USB 3.1 (10Gbps) USB-Type C devices, such as USB 3.1 Hubs. Backwards compatible with USB 3.0 (USB 3.1 Gen 1), and USB 2.0.

Dimensions & Weight
Dimensions	11.00" x 5.60" x 3.20"
Weight	3.60 lbs.

Package Contents
Package Contents	1 x Thunderbolt 3 PCIe expansion box 1 x Thunderbolt 3 cable 4 x rubber feet 1 x universal power adapter (NA/JP, UK, EU, ANZ) 1 x PCI Express x4 to M.2 PCIe SSD Adapter 1 x low-profile bracket 1 x full-profile bracket (pre-installed) 2 x quick-start guides 1 x SSD standoff and installation screw

Additional Information
First Listed on Newegg	October 17, 2025

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StarTech BNDTB4M2E1 Thunderbolt 3 to M.2 PCIe Adapter - External PCIe Enclosure / Chassis plus Card - with DisplayPort Monitor Port - PCIe SSD

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