ATTO ThunderLink NS-3252

ATTO ThunderLink NS-3252

Dual-Port Thunderbolt 3 to 25GbE SFP28 Desktop Network Adapter(2 x SFP28 Optical Transceiver Modules Included)

The ATTO ThunderLink NS-3252 provides seamless Thunderbolt 3 to dual 25GbE SFP28 connectivity, enabling high-speed network access for Thunderbolt-enabled workstations and all-in-one systems.

This compact, external adapter is engineered for demanding workflows in media production, data backup, clustered computing, and IP content delivery.

With robust compatibility and advanced offload capabilities, it ensures reliable, low-latency performance for bandwidth-intensive applications.

  • Dual 25GbE SFP28 ports with Thunderbolt 3 interface.
  • Supports macOS, Windows, and Linux operating systems.
  • Ideal for video editing, medical imaging, and enterprise storage networks.
  • Includes ATTO Advanced Data Streaming (ADS™) technology for optimized throughput.

Original price was: £ 1,446.64.Current price is: £ 1,398.95.

Please Call Us For Availability Of This Item

Category: Ethernet NICs, Thunderbolt Adapters
SKU: TLNS-3252-LE0
Brand: ATTO Technology

ATTO ThunderLink NS-3252 – Product Overview

The ATTO ThunderLink NS-3252 is a professional-grade Thunderbolt 3 to dual 25GbE SFP28 network adapter designed for creative professionals and enterprise users who require uncompromising network performance.

It bridges Thunderbolt-enabled workstations and all-in-one systems to high-speed Ethernet networks and storage, delivering up to 25Gb/s per port for demanding workflows.

This adapter is purpose-built for environments where bandwidth, low latency, and reliability are critical, such as video post-production, clustered computing, and large-scale data transfers.


High-Performance Thunderbolt 3 Connectivity

Leveraging Thunderbolt 3 technology, the NS-3252 provides up to 40Gb/s bandwidth, ensuring that even the most data-intensive applications are not bottlenecked by interface limitations.

This makes it ideal for 4K/8K video editing, real-time rendering, and rapid data backup operations.


Dual SFP28 25GbE Ports

The adapter features two SFP28 ports, each supporting 25GbE speeds and backward compatibility with 10GbE SFP+ modules.

This flexibility allows seamless integration into existing network infrastructures while future-proofing for higher bandwidth requirements.


Advanced Data Streaming and Offload Technologies

ATTO’s exclusive Advanced Data Streaming (ADS™) technology optimizes data transfers, reducing latency and maximizing throughput.

Hardware offloads for TCP, UDP, and IPv4, as well as support for Large Send Offload (LSO) and SR-IOV, further enhance performance and efficiency.


Robust Compatibility and Management

The NS-3252 is compatible with macOS, Windows, and Linux, making it suitable for heterogeneous environments.

Management features include SNMP and RMON support, as well as a watchdog timer for chip and driver status monitoring, ensuring reliable operation and simplified administration.


Optimized for Professional Workflows

This adapter is certified with major storage and workstation vendors, ensuring compatibility and data integrity for professional media, medical, and enterprise applications.

It is particularly well-suited for environments requiring high-speed file transfers, clustered computing, and IP-based content delivery.


Compact and Durable Desktop Form Factor

The low-profile, external desktop design allows for flexible deployment in space-constrained environments without sacrificing performance or reliability.


Compliance and Warranty

The NS-3252 meets TAA requirements and a wide range of international standards, and is backed by a 3-year limited warranty for peace of mind in mission-critical deployments.

ATTO ThunderLink NS-3252 – Key Features

  • Dual-port Thunderbolt 3 to dual 25GbE SFP28 network adapter.
  • Supports data rates up to 25Gb/s per port with backward compatibility to 10GbE SFP+ modules.
  • Advanced Data Streaming (ADS™) technology for optimized throughput and low latency.
  • Hardware offloads for TCP, UDP, IPv4, and Large Send Offload (LSO).
  • SR-IOV, VLAN tagging, link aggregation, and adaptive load balancing support.
  • Compatible with macOS, Windows, and Linux operating systems.
  • SNMP and RMON management with watchdog timer for status monitoring.
  • Compact desktop form factor with robust build quality.
  • TAA compliant and certified with major storage and workstation vendors.
  • 3-year limited warranty.

ATTO ThunderLink NS-3252 – Technical Specifications

Model NumberTLNS-3252-LE0
Host InterfaceThunderbolt 3 (2 x USB-C, 40Gb/s)
Network Interface2 x 25GbE SFP28 (backward compatible with 10GbE SFP+)
Form FactorDesktop, external
Data Transfer Rate25Gb/s per port
Connector TypeSFP28
Thunderbolt Cable Support40Gb/s cables designated with "3" marking
LED Indicators2 per port
Supported OSmacOS, Windows, Linux
Dimensions (H x W x D)3.05 cm x 10.3 cm x 22 cm (approx. 1.2" x 4.1" x 8.7")
Operating Temperature0°C to 40°C
Operating Humidity10% to 90% (non-condensing)
Network StandardsIEEE 802.3ae, 802.3az, 802.1p, 802.1q, 802.3ad, 802.1qbb, 802.1qaz, 8023.AD
Protocols SupportedTCP/IP, UDP/IP
ManagementSNMP, RMON, Watchdog timer
Advanced FeaturesADS™, LSO, SR-IOV, VLAN, Link Aggregation, Adaptive Load Balancing, Advanced Packet Filtering
Warranty3 years limited
ComplianceTAA, FCC Class B, EN55024, EN 60950-1, cTUVus, EN 60825-1, EN 60825-2, RoHS 2011/65/EU, EN 55032 Class B
Complimentary ProductsATTO Celerity Fibre Channel HBAs, ExpressSAS HBAs, FastFrame NICs, XstreamCORE Bridges, ThunderLink Adapters, ATTO premium cables
Maximum Cable Distance (25G)100 meters on OM4, 70 meters on OM3
Maximum Cable Distance (10G)100 meters on OM3
Country of ManufactureUnited States

ATTO Technology Delivery Information

Generally, next working day delivery services (UK Mainland) are available on standard ATTO Technology Delivery orders placed before 2 pm (subject to stock availability).

Non-timed deliveries should be delivered between 9 am and 6 pm.

Orders placed after 2 pm on Fridays and weekends will be processed as normal the following Monday.

Orders placed on Bank Holidays will be processed the next working day.

If urgent, please call one of our helpful account managers so they may double check everything for you, enabling you to place your order with confidence.

Please note: these product details are for guide purposes only, and may contain errors.

We always recommend double-checking the product specs and features on the the manufacturer website,  or contact us if unsure before ordering.