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Unmanaged Industrial Ethernet Switches – 4 x 10/100Base-TX RJ-45 – Fibre options in SC multi-mode, ST multi-mode, or SC single-mode up to 15 km – Wide -10°C to +65°C temperature operation
Who We Are
Impulse Embedded is a leading provider of Industrial computing systems and solutions. Our customers rely on us to provide the best embedded computing products and solutions for the challenges presented by today’s industrial demands. Together with our global manufacturing partners we provide world-class innovative embedded computing and automation products and solutions suitable for multiple industrial market sectors.
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The Advantech ADAM-6521 Series are compact, unmanaged industrial Ethernet switches designed for reliable and cost-effective network expansion. Each model provides four 10/100Base-TX copper ports and one 100Base-FX fibre port, enabling flexible connectivity between standard Ethernet devices and fibre-optic backbones.
The ADAM-6521 supports an SC multi-mode fibre port, while the ADAM-6521/ST uses an ST multi-mode connector. For longer-distance transmission, the ADAM-6521S offers a single-mode SC fibre port supporting distances of up to 15 km. This versatility makes the series well-suited for factory automation, semiconductor production lines, inventory management, and other industrial applications where both copper and fibre links are required.
Engineered for harsh industrial environments, the ADAM-6521 Series supports a wide operating voltage range of 10–30 VDC, includes 3,000 VDC surge protection, and offers 4,000 VDC ESD protection on Ethernet ports. The rugged IP30-rated enclosure allows for flexible DIN-rail, wall, or stack mounting, while six LED indicators simplify on-site troubleshooting with clear status for power, link activity, and transmission speed.
Operating reliably from -10°C to +65°C, these switches are designed for mission-critical use where downtime is not an option. With low power consumption (max. 3–4 W depending on the model) and MTBF figures exceeding 1,150,000 hours, they deliver dependable long-term service.
Explore the ADAM-6521 Series unmanaged switches today to find the right balance of copper and fibre connectivity for your industrial network.
Delivery & Returns
We offer a range of delivery options to suit your needs.
UK Mainland
Northern Ireland & Highlands
Ireland
RMA
In order to process returned goods, Impulse Embedded Limited uses an internal RMA system. Before returning goods for any reason, please contact Impulse Embedded Limited (returns@impulse-embedded.co.uk) to request an RMA number. Please confirm the reason for the return of the goods, providing the Serial Number, Product Code, and Impulse Embedded Limited Invoice Number (if known).
When returning goods, please ensure they are suitably packed so as to avoid damage, are in the original packaging, along with all accessories, with the outer packaging marked with the RMA number. It is recommended that you use a signed delivery service, as goods lost in transit are not the responsibility of Impulse Embedded Limited.
Please do not write the RMA number on the goods or on the original packaging. Impulse Embedded Limited may refuse returned goods and return them if they arrive without an RMA number, or not in the original packaging.
Advantech 5 Port Unmanaged Industrial Ethernet Switch
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Select the products of this series that you wish to request quantity or project pricing, or lead time information for:
ADAM-6521/ST-AE
5 Port Unmanaged Industrial Ethernet Switch – 4x Fast Ethernet – 1x Fast Fibre Multi-mode ST Fibre Optic Port
ADAM-6521-BE
5 Port Unmanaged Industrial Ethernet Switch – 4x Fast Ethernet – 1x Fast Fibre Multi-mode SC Fibre Optic Port
ADAM-6521S-AE
5 Port Unmanaged Industrial Ethernet Switch – 4x Fast Ethernet – 1x Fast Fibre Single-mode SC Fibre Optic Port
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