Shenzhen Mingjiada Electronics Co., Ltd. consistently supplies and purchases ASMedia ASM2464PD USB4 device-side controller chips at competitive prices. This chip is the world’s first USB4 device-side controller chip certified by the USB-IF, supporting USB4/Thunderbolt 40 Gbps high-speed data transfer and a PCIe Gen4 x4 downstream interface. It is widely used in portable SSDs, high-speed hard drive enclosures, eGPU external expansion, and AI edge acceleration applications.
I. Overview of the ASMedia ASM2464PD Chip
The ASM2464PD is a next-generation USB4/Thunderbolt-to-PCIe/NVMe accessory controller launched by ASMedia, based on ASMedia’s proprietary PHY design. USB4/Thunderbolt technology enables PCIe and USB protocols to be encapsulated within the USB4/Thunderbolt transmission channel and tunneled through the USB4/Thunderbolt interface.
In April 2023, this chip became the world’s first USB4 device-side chip to receive USB-IF certification (TID: 8924) and has officially passed Intel Thunderbolt 4 certification. The ASM2464PD integrates a PCB design that previously required six chips into a single chip, significantly simplifying the design complexity of end products.
II. ASM2464PD Key Specifications
USB Interface Features:
Supports USB4/Thunderbolt Gen3 x2 (20 Gbps × 2 lanes = 40 Gbps aggregate bandwidth)
Compatible with USB 3.2, USB 2.0, and backward compatible with Thunderbolt 3
Integrates two USB 20 Gbps PHYs
Supports BOT and UAS protocols, USB link power management, and hot-plugging
PCIe Downlink Interface Features:
Supports PCIe Gen4 x4
Supports various PCIe slot specifications, including M.2, U.2, U.3, and CFexpress
100 MHz differential reference clock output
Complies with the PCI Express Base Specification Rev. 4.0
NVMe Features:
Supports NVMe power management
Supports S.M.A.R.T. drive monitoring
Compliant with the NVM Express Base Specification Rev. 1.4c
Power and Packaging:
Integrated VDD/VCCL/VCCH multi-rail power supply
Integrated BMC PHY, supports PD Sink mode (fixed 5V)
On-chip 25 MHz crystal oscillator
Supports SPI, I2C, GPIO, and UART interfaces
Package: 10×10 mm² FCCSP (lead-free, RoHS Green)
Certifications and Compliance:
Compliant with USB4 Specification Rev. 1.0 (including Thunderbolt 3 interoperability)
Compliant with USB Type-C Cable and Connector Specification Rev. 2.1
Compliant with USB Power Delivery Specification Rev. 3.1 Version 1.3
III. ASM2464PD Typical Application Scenarios
3.1 Portable SSDs and High-Speed Hard Drive Enclosures
The ASM2464PD’s primary application is in portable SSDs and SSD enclosures. This chip enables external data transfer speeds of up to 40 Gbps via the USB4 interface for NVMe SSDs. In real-world testing, sequential read and write speeds reach approximately 3,700 MB/s—nearly double that of traditional USB 3.2 solutions (approximately 2,000 MB/s). Currently, several commercially available USB4 hard drive enclosures—including the Lianli CM642, SilverStone MS12-40G, and WAVLINK WL-ST401C—utilize the ASM2464PD as their controller chip. Its backward compatibility with USB 3.2 and Thunderbolt 3 ensures that users can operate these devices normally even on older equipment that does not support USB4.
3.2 External eGPU Connectivity and AI Edge Computing Acceleration
By bridging PCIe devices via USB4/Thunderbolt interfaces, the ASM2464PD enables standard desktop and laptop computers to connect external GPUs or AI accelerator cards via plug-and-play, facilitating efficient edge AI computing. Expansion solutions based on the ASM2464PD (such as the ADT-UT3G) have already been used to connect external graphics cards, enabling offloading of AI/ML tasks on macOS, Windows, and Linux platforms. The Chestnut eGPU Dock launched by Comma.ai was developed based on the ASM2464PD controller, and the accompanying open-source C-language firmware has been released in the tinygrad GitHub repository, further expanding the chip’s application ecosystem in the field of AI inference.
3.3 High-Speed Data Storage Expansion
The ASM2464PD supports various NVMe storage form factors, including M.2, U.2, U.3, and CFexpress, and can be flexibly adapted for high-speed media drive expansion in professional video editing workstations, multi-bay NAS storage arrays, and external storage solutions in data centers.
IV. Mingjiada Electronics Supply and Procurement Services
Established in 1996, Shenzhen Mingjiada Electronics Co., Ltd. is a globally renowned authorized independent distributor of electronic components. The company has obtained ISO 9001:2014 international quality management system certification and ISO 14001:2014 environmental management system certification, with branches in Hong Kong, Japan, Russia, Taiwan, and other locations.
Supply Services: Mingjiada provides a long-term, stable supply of the full range of ASMedia USB controller chips. For the ASM2464PD, we offer brand-new, genuine, in-stock units to meet the immediate procurement needs of portable SSD solution providers, hard drive enclosure manufacturers, AI computing device manufacturers, and customers in the industrial control sector.
Purchasing Services: Mingjiada offers high-price purchases of ASM2464PD and related ASMedia chip inventory from domestic and overseas companies, including factory surplus stock, leftover materials from canceled projects, goods returned to the port, and electronic surplus goods from customs confiscation auctions. The purchasing process is standardized and efficient: After customers submit an inventory list (including model numbers, brands, quantities, batch numbers, and other details), our professional team quickly evaluates the items based on real-time market conditions and provides a competitive quote. Full payment is made immediately upon successful physical inspection of the goods.
For more information on ASM2464PD supply details or to submit a purchase request, please contact the professional team at Mingjiada Electronics.
Tags: ASM2464PD, ASM2464P, ASM2464
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