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

Questions & Answers

My computer is not properly detecting my Thunderbolt 3 device. What do I do?
If your computer is not detecting your Thunderbolt™ 3 device, try the following: Update the Thunderbolt software on your Thunderbolt 3 host device. Update the Thunderbolt controller NVM firmware on your Thunderbolt 3 host device. Update the Thunderbolt controller drivers. Update your motherboard BIOS or UEFI. For more information about how to update the software, firmware, drivers, and BIOS or UEFI, refer to the website of the manufacturer of the Thunderbolt 3 host device. The following website includes links to some of the manufacturers of Thunderbolt 3 host devices: https://thunderbolttechnology.net/updates . If the manufacturer of your host device is not listed, you should contact the manufacturer or refer to their website for more information. For more information about how to check which version of the Thunderbolt software and firmware you are currently using, see the following FAQ: https://www.startech.com/faq/thunderbolt-3-check-software-firmware . For more information about Thunderbolt 3 host system and motherboard compatibility, refer to the Thunderbolt 3 Compatibility and Troubleshooting guide .

What do I do if only the video portion of my Thunderbolt device is working?
When you connect a Thunderbolt™ device to any Windows operating system that can support Thunderbolt 3, a pop-up message appears. To use your Thunderbolt 3 device do one of the following: Select Connect Only Once . Select Always Connect . Caution! If you select Do Not Connect , only video will pass through on your Thunderbolt 3 device. If you accidentally set a Thunderbolt™3 device to not connect to your computer when prompted by the system, you can force the software to prompt you again for authentication. To do so, complete the following: Right-click the Thunderbolt icon. Click Approve Attached Devices . Select the Thunderbolt 3 port that you want to authenticate.

I received an error message stating that the Thunderbolt device I’m using is not certified for PC use. How do I resolve this issue?
If you receive an error message that your Thunderbolt device is not certified for PC use, try the following to resolve the issue: Click Start . Type Thunderbolt and click the search result. In the system tray, right-click the Thunderbolt icon. Click Settings . Clear the Only allow Thunderbolt Devices that have been certified for PC check box.

My DisplayPort displays are not working at 60Hz with this adapter. How do I resolve this issue?
To use a Thunderbolt 3 adapter to output to a display at 60Hz, your monitor must support the refresh rate and you need to set the monitor to work at 60Hz. By default, most monitors are set to DP1.1, which will not work with this Thunderbolt 3 device when you use a display at 60Hz. In most cases, you need to set your monitor's DisplayPort settings to DP1.2. To resolve this issue, use the buttons on your monitor to change the DisplayPort settings to DP1.2. For more information about changing your monitor settings, refer to the website of the manufacturer of your monitor.

My DisplayPort display is not working when I try to output 4K at 30Hz with this device. How do I resolve this issue?
To output 4K to a DisplayPort display at 30Hz, your monitor must support the resolution and refresh rate. If your monitor also supports 4K at 60Hz (DP 1.2 or higher), you may also need to set the monitor to work at 30Hz. To resolve this issue, use the buttons on your monitor to change the DisplayPort settings to DP1.1. For more information about how to change your monitor settings, refer to the website of the manufacturer of your monitor.

How do I check which version of Thunderbolt 3 software, firmware, and drivers I am running in Windows?
To check which version of the Thunderbolt™ software, NVM firmware, and drivers you are running, do the following: Click Start . Type Thunderbolt and click on the search result. In the system tray, right-click the Thunderbolt icon. Click Settings > Details . Review the versions of the software package, NVM firmware, PD firmware, and drivers. If you are not running the latest versions, navigate to the manufacturer’s website and download the latest versions.

When I connect my Thunderbolt 3 device to my Windows computer, I get pop-up messages. What do I do?
When you connect a Thunderbolt™ device to any Windows operating system that can support Thunderbolt 3, a pop-up message appears. To use your device, complete the following: In the New Thunderbolt devices have been attached pop-up message, click OK . In the User Account Control pop-up message, click Yes . In the Approve Thunderbolt Devices pop-up message, do one of the following: If you want to authorize your Thunderbolt devices every time that you connect them, select Connect Only Once in the drop-down list. If you want to authorize your Thunderbolt devices only once, select Always Connect in the drop-down list. Click OK . If you accidentally set your Thunderbolt device to Do Not Connect in step three above, refer to the following FAQ: https://www.startech.com/faq/thunderbolt-3-denied-authentication .

What do I do if I accidentally set my Thunderbolt 3 device to Do Not Connect and it stops working?
If you accidentally set a Thunderbolt™3 device to not connect to your computer when prompted by the system, you can force the software to prompt you again for authentication. To do so, complete the following: Right-click the Thunderbolt icon. Click Approve Attached Devices . Select the Thunderbolt 3 port that you want to authenticate.

How do I manage my authenticated Thunderbolt 3 devices in Windows?
You can use the Thunderbolt™ software to manage your Thunderbolt 3 devices on a computer running a version of Windows. To manage your Thunderbolt 3 devices, complete the following: Click Start . Type Thunderbolt and click on the search result. Right-click the Thunderbolt icon. Click Manage Approved Devices .

Can I use a Thunderbolt 3, Thunderbolt 4, or Thunderbolt 5 device on a USB-C or USB4 port?
No, a Thunderbolt 3, Thunderbolt 4, or Thunderbolt 5 device requires a Thunderbolt-enabled port and will not work on a USB-C port that does not support Thunderbolt. Explanation: Thunderbolt 3, Thunderbolt 4, and Thunderbolt 5 use the USB-C connector, but they require Thunderbolt protocol support from the host port, cable, and device. Compatibility rules are as follows: A Thunderbolt device (Thunderbolt 3, 4, or 5) only works when connected to a Thunderbolt-enabled USB-C port. A standard USB-C port without Thunderbolt support does not support Thunderbolt devices and will result in no functionality. USB-C devices are compatible with Thunderbolt 3, Thunderbolt 4, and Thunderbolt 5 ports because Thunderbolt includes USB support. USB4 ports may support Thunderbolt 3 devices, but this support is optional and not guaranteed. USB4 does not ensure compatibility with Thunderbolt 4 or Thunderbolt 5 devices. To confirm compatibility, look for the Thunderbolt symbol on the host port, cable, and device. If the Thunderbolt symbol is not present, the connection supports USB-C only and does not support Thunderbolt devices. All components in the connection must support the required Thunderbolt standard to ensure proper operation and full performance.

What is Thunderbolt, and how do Thunderbolt 3, Thunderbolt 4, and Thunderbolt 5 differ?
Thunderbolt is a high-performance connectivity standard that combines data, video, networking, and power delivery over a single connection. Thunderbolt 3, Thunderbolt 4, and Thunderbolt 5 all use the USB-C connector, but each generation offers different performance capabilities, certification requirements, and feature sets. Explanation: Thunderbolt is an Intel-developed connectivity technology that enables high-speed communication between computers, displays, storage devices, docking stations, and other peripherals through a single cable connection. Thunderbolt combines multiple technologies, including: PCI Express (PCIe) data transfer DisplayPort video USB data connectivity Power delivery The following table compares the capabilities of Thunderbolt 3, Thunderbolt 4, and Thunderbolt 5: Feature Thunderbolt 3 Thunderbolt 4 Thunderbolt 5 Maximum Bandwidth Up to 40Gbps Up to 40Gbps Up to 80Gbps (120Gbps with Bandwidth Boost) USB Compatibility Up to USB4 Up to USB4 Up to USB4 Version 2.0 Display Support Up to two 4K displays or one 5K display Up to two 4K displays or one 8K display Up to three 4K displays, multiple 8K displays, or higher resolutions depending on device support PCIe Bandwidth Up to 32Gbps Minimum 32Gbps required Up to 64Gbps Power Delivery Up to 100W (device dependent) Up to 100W (device dependent) Up to 240W supported with USB Power Delivery 3.1 Extended Power Range on supported devices Daisy Chaining Up to six devices Up to six devices Up to six devices Thunderbolt 4 maintains the same maximum bandwidth as Thunderbolt 3 but introduces stricter certification requirements, including: Support for dual 4K displays or one 8K display PCIe bandwidth requirements for storage devices Wake-from-sleep support through Thunderbolt peripherals Mandatory support for docks with multiple Thunderbolt ports Enhanced security protections against direct memory access (DMA) attacks Thunderbolt 5 significantly increases available bandwidth and is designed for high-performance applications such as: Professional content creation High-resolution multi-display environments AI and workstation workloads External GPU and high-speed storage connectivity USB-C and Thunderbolt Compatibility Thunderbolt 3, Thunderbolt 4, and Thunderbolt 5 all use the USB-C connector. However, a USB-C connector alone does not indicate Thunderbolt support. A device may include a USB-C port that supports: USB 2.0 USB 3.2 USB4 Thunderbolt 3 Thunderbolt 4 Thunderbolt 5 The capabilities of a USB-C port depend on the hardware implementation of the host device. In general: USB devices can typically connect to Thunderbolt ports. Thunderbolt devices require a Thunderbolt-compatible host to access Thunderbolt functionality. A USB-C host that does not support Thunderbolt cannot provide Thunderbolt features to a Thunderbolt peripheral. Thunderbolt-certified ports and devices are typically identified by the Thunderbolt logo next to the USB-C connector. Backward Compatibility Thunderbolt maintains broad backward compatibility across generations: Thunderbolt 5 is compatible with Thunderbolt 4, Thunderbolt 3, USB4, and USB-C devices when supported by the host and device. Thunderbolt 4 is compatible with Thunderbolt 3 devices. Thunderbolt 3 can connect to Thunderbolt 1 and Thunderbolt 2 devices using an appropriate adapter. Thunderbolt 1 and Thunderbolt 2 hosts cannot fully support Thunderbolt 3, Thunderbolt 4, or Thunderbolt 5 devices without compatible hardware and adapters. Actual performance depends on the capabilities of the host computer, peripheral device, cable, and software environment.

Thunderbolt 3 vs. USB-C Ports: What's the Difference?
USB-C and Thunderbolt are not the same technology. USB-C is a connector type, while Thunderbolt is a connectivity standard that uses the USB-C connector. Not all USB-C ports support Thunderbolt, but Thunderbolt 3, Thunderbolt 4, and Thunderbolt 5 ports all use the USB-C connector and support USB devices. Explanation: A common source of confusion is that USB-C and Thunderbolt ports look identical because they use the same physical connector. However, the connector shape does not determine the capabilities of the port. USB-C is a connector standard that can support a variety of technologies, including: USB 2.0 USB 3.2 USB4 DisplayPort Alternate Mode (DP Alt Mode) USB Power Delivery (USB PD) Thunderbolt 3 Thunderbolt 4 Thunderbolt 5 The actual features available depend on the hardware implementation of the computer, cable, and connected device. Compatibility In most cases: USB devices can connect to Thunderbolt 3, Thunderbolt 4, and Thunderbolt 5 ports. Thunderbolt ports support USB functionality in addition to Thunderbolt functionality. Thunderbolt devices require a Thunderbolt-compatible host to access Thunderbolt features. A USB-C port that does not support Thunderbolt cannot provide Thunderbolt functionality to a Thunderbolt device. As a result, a USB-C device will generally work when connected to a Thunderbolt port, but a Thunderbolt device may not function correctly when connected to a USB-C port that does not support Thunderbolt. How to Identify a Thunderbolt Port Thunderbolt-certified ports typically display a Thunderbolt logo next to the USB-C connector. To determine whether a computer, cable, or device supports Thunderbolt: Look for the Thunderbolt symbol on the port or cable. Check the product specifications provided by the manufacturer. Review the technical documentation for the computer or device. Because USB-C ports can support a wide range of capabilities, checking the product specifications is the most reliable way to confirm support for Thunderbolt, USB4, display output, charging, or other advanced features. Thunderbolt symbol:

What DC barrel connector power plug types do StarTech.com products use, and what are their dimensions?
StarTech.com DC barrel connector plug types are defined in the “Plug Type” field of the technical specifications, using a letter code that specifies the connector’s outer diameter (OD) and inner diameter (ID) in millimeters for power adapter compatibility. Explanation: In StarTech.com technical specifications, the “Plug Type” field is a standardized identifier for the exact DC barrel connector size required to power a product. Each plug type is assigned a letter code that corresponds to a specific combination of outer diameter (OD) and inner diameter (ID), measured in millimeters. Common DC barrel plug type dimensions Plug Type OD ID A 2.35 mm 0.7 mm B 4.0 mm 1.7 mm C 4.75 mm 1.7 mm H 3.4 mm 1.3 mm L 5.0 mm 2.5 mm M 5.5 mm 2.1 mm N 5.5 mm 2.5 mm The DC barrel connector plug type must match both the outer diameter and inner diameter exactly. A mismatch between the StarTech.com product requirement and the power adapter connector can prevent proper fit or stable power delivery, which may result in device startup failure or intermittent operation. The plug type defines only the physical connector size. The plug type does not define electrical power requirements such as voltage, current, or polarity. The power adapter used with a StarTech.com product must match the product’s specified electrical requirements. Using an incompatible power adapter can cause device malfunction or permanent damage. This standardized DC barrel connector plug type system enables IT professionals and procurement teams to verify connector dimensions, ensure power adapter compatibility, standardize hardware deployments, and identify the correct replacement power supply for StarTech.com products.