NI PXIe-8301 Thunderbolt 3 Remote Control Module Board

The module is installed in the system controller slot of a PXI Express chassis and connects to a laptop equipped with a Thunderbolt 3 port via a Thunderbolt 3 USB Type-C copper cable, establishing a PCI Express Gen 3 x4 link and providing a continuous data throughput of up to 2.3 GB/s (active cable). The PXIe-8301's second Thunderbolt 3 port supports daisy-chaining of additional Thunderbolt or USB-C peripherals (such as external storage or displays), but does not support connecting additional PXI chassis.

The PXIe-8301 Remote Control Module Board supports copper cabling via a Thunderbolt 3 USB Type-C interface and does not support fiber optic cables. Other NI products (such as the PXIe-8375 and PXIe-8381 with fiber optic options) support fiber optic connections, but the PXIe-8301 only supports Thunderbolt 3 copper cabling.

With its low-cost laptop control solution, plug-and-play transparent software connectivity, and continuous throughput of up to 2.3 GB/s, this product is an ideal choice for scenarios such as bench characterization and verification, and portable automated test systems.

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Xi'an Mingxi Taida Information Technology Co., Ltd. brings over 12 years of industry expertise , we are a professional technology company integrating product research and development, sales, and service. With over ten years of experience in R&D, production, and sales, we serve our clients. Our main products are currently exported to various countries and regions worldwide, including North America, South America, Europe, and Africa. We also provide distribution services for major international brands to meet the diverse needs of our customers. We have strict and detailed quality control requirements to ensure that those who choose our products and brands can use them with confidence and that they better meet their current needs.

Description

The NI PXIe-8301 is a Thunderbolt 3 remote control module for the PXI Express platform. Its core mission is to enable engineers to control PXI Express chassis and the various instrument modules installed within them with extremely low system cost and high portability via a laptop equipped with a Thunderbolt 3 port.

In traditional PXI remote control architectures, controlling a PXI chassis using a desktop or rack-mount controller requires two hardware components: a host interface card (such as the PCIe-8381) that plugs into the PC and a remote control module (such as the PXIe-8381) that plugs into the chassis's system slot. These are connected via MXI-Express copper or fiber optic cables. The PXIe-8301 Remote Control Module Board revolutionizes this model—it eliminates the need for a host interface card, allowing a laptop to be directly connected to the PXI Express chassis via a single Thunderbolt 3 USB Type-C cable. This significantly reduces total system cost and simplifies deployment.

The PXIe-8301 offers significant advantages in terms of connectivity, data throughput, and system scalability:

• Thunderbolt 3 Plug and Play Connection

The PXIe-8301 Remote Control Module Board is built on Intel Thunderbolt 3 technology. Thunderbolt technology is transparent to device drivers; the operating system automatically recognizes it as a group of PCI-to-PCI bridged devices, providing CompactPCI Express-level device support without the need for additional drivers. This means that all modules in the PXI Express chassis are recognized as local PCI Express devices on the host side, and existing application code can run without any modifications.

• PCI Express Gen 3 x4 High-bandwidth Link

The PXIe-8301 establishes a PCI Express Gen 3 x4 link on the backplane of a PXI Express chassis, supporting 2-link and 4-link configurations (depending on chassis capabilities), achieving a raw transfer rate of up to 40 Gbps in each direction on the Thunderbolt 3 link. Effective sustained data throughput after protocol overhead:

Active Cable: Up to 2.3 GB/s, Passive Cable: Approximately 2.0 GB/s.

• Dual Thunderbolt 3 Port Design

The module is equipped with two Thunderbolt 3 ports. The first port is used to establish a host connection with a laptop, and the second port can be daisy-chained to other Thunderbolt 3 or USB-C compatible devices (such as external storage, monitors, etc.), expanding connectivity when the number of Thunderbolt ports on a laptop is limited.

Note: NI does not support daisy-chaining additional PXI chassis via the second port of the PXIe-8301. For multi-chassis systems, please select a desktop or rack-mount controller solution equipped with a PCI/PCI Express host interface card.

• Backward compatibility

The PXIe-8301 Remote Control Module Board is compatible with previous generation PXI Express hardware specifications. Due to Thunderbolt 3 backward compatibility, it can establish connections with hosts equipped with Thunderbolt 1 or Thunderbolt 2 ports via an adapter (data throughput may vary depending on the Thunderbolt generation). The PXIe-8301 is also compatible with previous generation PXI Express chassis, but a Gen 3 PXI Express chassis is required to achieve maximum performance.

• Software is transparent and requires no programming

The core value of MXI-Express Thunderbolt technology lies in software transparency—all devices in a PXI Express chassis appear as local PCI Express devices on the host side, requiring no modifications to existing drivers and application software. For full PXI/PXI Express functionality (chassis and controller identification, trigger routing, slot detection), NI PXI Platform Services software is required; this software is included in the product suite.

• Low-cost notebook control solution

Compared to desktop/rack-mount controller solutions, the PXIe-8301 requires no additional host interface card, needing only a single Thunderbolt 3 cable for connection, significantly reducing the total cost of ownership. This makes high-performance PXI system control more accessible and economical.

Its design goal is clear: to enable engineers performing bench characterization and verification, and teams developing portable automated test systems, to obtain high-performance PXI system control capabilities at a lower cost and with greater portability.

Within NI's PXI remote control product portfolio, the PXIe-8301 is positioned as follows:

Functions:

• Remote Control of PXI Express Chassis with Laptop

The PXIe-8301 is installed in the system controller slot (Slot 1) of the PXI Express chassis and connects to a laptop equipped with a Thunderbolt 3 port via a Thunderbolt 3 USB Type-C cable. During power-on, the laptop recognizes all peripheral modules in the PXI system as local PCI Express devices, allowing interaction with these devices via the controller

• Physical Separation of Measurement System from Host PC

MXI-Express Thunderbolt allows for the physical separation of measurement or automation systems from the host PC. This is particularly important for applications requiring the deployment of measurement hardware in harsh environments or controlled spaces, while simultaneously operating the control computer from a secure area.

• Thunderbolt Peripheral Daisy Chain Expansion

The second Thunderbolt 3 port of the PXIe-8301 Remote Control Module Board supports daisy chaining to other Thunderbolt 3 compatible devices, such as external storage and displays, fully utilizing the device chaining capabilities of the Thunderbolt 3 protocol.

The internal functional architecture of PXIe-8301 is as follows:

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Signal Path Description:

• SMBus Master: Manages system bus communication for chassis identification and monitoring
• PCI Express Gen 3 Switch: A 4-lane PCI Express Gen 3 switch that routes data between the PXI Express backplane and the Thunderbolt 3 controller
• Thunderbolt 3 Controller: Encapsulates the PCI Express protocol into a Thunderbolt 3 tunnel format
• Thunderbolt 3 Ports: Two USB Type-C physical Thunderbolt 3 ports

Shock and Vibration

Software User Manual

NI PXI Platform Services

• Functionality: Supports NI PXI chassis and controllers, implements PXI software specifications, and provides system services for other NI products
• Necessity: Required by PXIe-8301 for chassis and controller identification, trigger routing, and slot detection
• Inclusion: Included with product kits; the latest version can also be found by searching "PXI Platform Services" at ni.com/updates
• Latest Version: Q2 2026, released on April 13, 2026​​​​​​​
• Supported Operating Systems: Windows 11, Windows Server 2025, Windows Server 2022 64-bit, Windows 10 IoT Enterprise 2021
• Language Support: English, French, German, Japanese, Korean, Simplified Chinese
• File Size: 8.79 MB

NI MAX is a key component of PXI Platform Services, providing a graphical interface for:

• Viewing and configuring the organizational structure of PXI Express systems
• Accessing trigger routing functionality for PXI Express chassis
• Programmatically obtaining chassis and installed module information
• Configuring system properties and device identification

Custom Design

We get it that standard arrangements do not continuously meet one of a kind prerequisites. Our experienced building group gives comprehensive OEM/ODM customization administrations. Whether you require adjusted recurrence ranges, specialized activating alternatives, or custom frame components, we work closely with you to create the idealize arrangement. Our adaptable plan approach guarantees your particular application needs are completely tended to whereas keeping up our quality standards.

Application:

Bench Characterization and Validation:

Engineers can quickly control PXI instrument modules using laptops in a laboratory bench environment.

Portable Automated Testing:

Laptops offer high portability for applications requiring test systems to be deployed in different locations

Low-Cost PXI Startup:

PXI system development can begin using existing laptops without the need to purchase a desktop or embedded controller.

Space-Constrained Environments:

Measurement systems can be deployed in space-constrained areas, while the control laptop is placed in the operating area.

FAQs:

Q: The chassis is not displayed in NI MAX after connecting via Thunderbolt

A:  

Solution- Verify PXI Platform Services version compatibility (Windows 10's first compatible version is 17.0, and Windows 11's first compatible version is Q3 2022)

- Ensure correct boot order: Open the computer case first, then turn on the computer

- Check if Thunderbolt Security is set to Off in the BIOS

​​​​​​​- Verify the use of a Thunderbolt cable (not a regular USB-C cable)

- Connect directly to the Thunderbolt port (without using an extender or docking station)

- Check if the Thunderbolt controller is correctly recognized in Windows Device Manager

- If using Windows 11, you may need to disable Memory Integrity or Kernel DMA Protection

Q: Does the PXIe-8301 require additional drivers?

A: No. MXI-Express Thunderbolt is based on PCI Express technology, and the operating system automatically recognizes it as a PCI-to-PCI bridge set, with CompactPCI Express level plug-and-play support. However, for full PXI functionality (chassis identification, trigger routing, slot detection), PXI Platform Services must be installed

Q: Does it support virtualization environments​​​​​​​?

A: No. The PXIe-8301 requires the host to run a native (non-virtualized) operating system that supports Thunderbolt connectivity​​​​​​​

Q: The computer case is connected to the computer via cable and powered on, but the PXIe case and slot cards cannot be found in the NI MAX software or Device Manager. How can I troubleshoot this?

A: ​​​​​​​

Strict Power-On Sequence: The physical power supply to the PXIe chassis must be turned on first. Wait a few seconds for the chassis fans and expansion cards to stabilize their power supply before starting or restarting the host computer. Reversing this sequence will prevent the computer's BIOS from allocating PCIe resources via the Thunderbolt bus during the boot process.

Check Port Type: Ensure the cable is connected to a physical Thunderbolt 3/4 port on the computer, marked with a "lightning bolt" icon, not a similar-looking but data/video-only USB-C port

Manual Thunderbolt Control Center Authorization: Windows may block the device upon initial connection for security reasons. You must open the built-in Intel Thunderbolt Control Center, locate the connection in the device list, and manually change its status to "Always Connect" or "Approve"

Disable Kernel DMA Protection: Newer laptops have Kernel DMA Protection enabled by default in the BIOS. This security mechanism directly cuts off low-level memory access from external Thunderbolt devices. You must disable it in the computer's BIOS settings.

Q: Why does it fail to work at all when I put an older PXI or a specific board that relies on I/O space into the chassis, and try to control it through the PXIe-8301?

A: This is a physical limitation at the hardware level. The Thunderbolt™ 3 protocol specification, from its underlying architecture, does not support any I/O space transactions; it only supports memory-mapped I/O (MMIO). If your chassis contains very old, legacy PXI instrument cards that are heavily reliant on the I/O port mapping space of older computers, then the PXIe-8301 simply cannot drive the card. Such applications must instead use standard remote control solutions based on dedicated PCIe bridge cards (such as the PXIe-8381 with a PCIe-8381 architecture).

Q: When my computer is connected to a PXIe-8301 and running tests, it occasionally experiences a "Windows Blue Screen of Death (BSoD)" or a sudden system crash. How can I completely resolve this issue?

A: 

Hot-swapping is strictly prohibited: Although Thunderbolt 3 technology boasts hot-swapping support, NI officially prohibits unplugging Thunderbolt cables while the system is powered on in highly demanding, high-data-throughput PXI instrument measurement systems. This can easily cause a sudden surge in the PCIe bus data link, leading to a direct crash of the Windows kernel and a blue screen error.

Disable Fast Startup: In Windows system power settings, disable the "Fast Startup" feature. Fast Startup causes the operating system to skip the re-enumeration scan of external hardware during shutdown, resulting in a probabilistic loss or error of the Thunderbolt link upon the next boot

Avoid using any third-party adapters: The PXIe-8301 only supports native, compliant Thunderbolt 3/4 physical connections. Connecting any USB-C adapters or long, low-quality, non-active cables in between will severely attenuate high-frequency signals, causing intermittent system crashes

Contact Us

Ready to integrate reliable Remote Board control into your system? Our team is here to help you select the right configuration and provide ongoing support.

Contact our technical specialists at manager03@mxtdinfo.com  / manager02@mxtdinfo.com for detailed specifications, pricing information, or to discuss your custom requirements. We're committed to delivering the perfect NI PXIe-8301 Thunderbolt 3 Remote Control Module Board solution for your application needs.