top of page
Untitled design (2).gif

QNAP Introduces New 25GbE NIC for NAS and PC, Featuring Mellanox ConnectX-4 Lx SmartNIC with iSER

Taipei, Taiwan, February 25, 2019 – QNAP® Systems, Inc. today unveiled the new dual-port 25GbE QXG-25G2SF-CX4 and 10GbE QXG-10G2SF-CX4 network NICs. Featuring Mellanox® ConnectX®-4 Lx SmartNIC controllers, these cards can greatly boost file transfer speeds and also support iSER (iSCSI Extension for RDMA) to optimize VMware virtualization. Both cards are PCIe Gen3 ×8 and can be installed in a Windows®/Linux® PC or compatible QNAP NAS.

“Cloud, big data, high-speed storage, virtualization, and AI are strongly pushing 25GbE into the mainstream,” said Dan Lin, Product Manager of QNAP, adding “QNAP now provides users with a scalable solution for adopting 25GbE infrastructure by leveraging the industry-leading Mellanox Ethernet solution to deliver a next-gen 25GbE NIC for NAS, servers and workstations."

The QXG-25G2SF-CX4 and QXG-10G2SF-CX4 provide flexible 25GbE and 10GbE connectivity and iSER support to meet today's high-speed requirements. When used with high-performance NAS (such as the TS-x83XU, TVS-x72XU, or TS-x77XU) users can benefit from lightning-fast throughput for massive data transmission, fast backup/restoration, maximized SSD-based applications, and optimal VMware performance.

The QXG-25G2SF-CX4 and QXG-10G2SF-CX4 can work with server-grade PCs to speed up workflows in offices and homes. Users can download Windows and Linux drivers from Mellanox. QTS 4.3.6 (or later) is required to use the QXG-25G2SF-CX4/ QXG-10G2SF-CX4 with a QNAP NAS.

Key specifications

  • QXG-25G2SF-CX4: Dual-port 25GbE SFP28 network expansion card.

  • QXG-10G2SF-CX4: Dual-port 10GbE SFP+ network expansion card .

Mellanox ConnectX-4 Lx controller; PCI Express Gen3 x8, low-profile, full-height and specialized brackets (for designated QNAP NAS) included in the package.


The QXG-25G2SF-CX4 and QXG-10G2SF-CX4 are now available for purchase from the QNAP Accessories Store. For more product information, please watch the live presentation video. To view the full QNAP NAS lineup, please visit

About QNAP Systems, Inc.

QNAP Systems, Inc., headquartered in Taipei, Taiwan, provides a comprehensive range of cutting-edge Network-attached Storage (NAS) and video surveillance solutions based on the principles of usability, high security, and flexible scalability. QNAP offers quality NAS products for home and business users, providing solutions for storage, backup/snapshot, virtualization, teamwork, multimedia, and more. QNAP envisions NAS as being more than "simple storage", and has created many NAS-based innovations to encourage users to host and develop Internet of Things, artificial intelligence, and machine learning solutions on their QNAP NAS.


bottom of page