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header-product Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL QSFP28 4xSFP28 InfiniBand 2m Black
173.49 €

Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL QSFP28 4xSFP28 InfiniBand 2m Black

Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 1
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 2
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 3
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 4
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 5
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 6
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 7
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 8
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 9
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 1
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 2
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 3
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 4
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 5
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 6
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 7
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 8
Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL Photo 9
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Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL QSFP28 4xSFP28 InfiniBand 2m Black

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Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL QSFP28 4xSFP28 InfiniBand 2m Black

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Short description

The BlueOptics DAC-Q28-4S28-25G-2M-BL is a high-performance InfiniBand/fibre optic cable designed for data centers. With a length of 2 meters, it features a QSFP28 connector on one end and four SFP28 connectors on the other, allowing for efficient data transmission. The male/male configuration ensures compatibility with various devices, making it ideal for high-speed networking applications. Its robust design and black color provide durability and a professional appearance.
Available for order: 50 pcs.
Warranty: 2 Years
SKU: 10894276
Manufacturer: BlueOptics
free shipment

Cheapest delivery:

Venipak Pickup LV, Venipak Locker LV

Pick-up points

Venipak Pickup LV

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
06.08.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
11.08.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.25 kg)
Parcel couriers
Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
11.08.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Payment Methods:
Bank transfer
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Product information

Description

The BlueOptics DAC-Q28-4S28-25G-2M-BL QSFP28 4xSFP28 InfiniBand 2m Black is a direct-attach copper (DAC) cable designed for short-reach, high-speed interconnects in data centre environments. This 2-metre, male-to-male assembly terminates in a QSFP28 connector on one end and four SFP28 connectors on the other, enabling aggregation or breakout of a single QSFP28 port into four independent 25G SFP28 links. The cable is supplied in a black jacket and built to support reliable, low-latency connections between switches, routers, host adapters and storage systems where InfiniBand or 25 Gigabit Ethernet links are required.

Advantages

This DAC offers a compact, cost-effective way to deploy multi-lane 25G links without the need for optical transceivers. The fixed 2 m length minimises signal loss for short-reach interconnects and simplifies cabling within racks and between adjacent equipment. The QSFP28-to-4xSFP28 breakout design provides flexible port consolidation and easy migration paths from higher-density QSFP ports to multiple SFP28 endpoints. The black outer jacket and robust construction contribute to durable handling in rack environments.

Suitable for

  • Server-to-switch or switch-to-switch connections within the same rack or adjacent racks
  • InfiniBand fabrics and 25 Gigabit Ethernet breakout applications
  • High-density top-of-rack deployments requiring port aggregation or breakout
  • Short-reach links in data centres, storage arrays and compute clusters

Key specifications

  • Cable length: 2 m
  • Connector configuration: QSFP28 (male) to 4 × SFP28 (male)
  • Supported link types: InfiniBand and 25G Ethernet breakout
  • Physical weight: 0.25 kg
  • Product colour: Black

How to use

Ensure both devices support QSFP28-to-SFP28 breakout operation and are powered off or operating according to vendor hot-plug guidance before insertion. Align and insert the QSFP28 plug into the QSFP28 port and individually insert each SFP28 plug into the target SFP28 ports until latches engage. Verify link status on connected devices and configure port modes or link speeds in the switch or host adapter firmware as required for InfiniBand or 25G Ethernet operation. Avoid excessive bending near the connector ends and secure cables to prevent strain on the connectors.

Lietošanas ieteikumi

Install in short, rack-level connections to minimise attenuation; avoid running the DAC alongside high-power electrical cabling to reduce potential interference. For optimal reliability, follow equipment vendor compatibility lists and firmware requirements when using QSFP28 breakout functionality.

Specifications

Cable length:
2 m
Connector 1:
QSFP28
Connector 2:
4xSFP28
Weight:
0.25 kg
Product colour:
Black
All features
Data transfer rate:
100000 Gbit/s
InfiniBand protocol:
Yes

Features

Cable length:
2 m
Connector 1:
QSFP28
Connector 2:
4xSFP28
Product colour:
Black
AWG wire size:
26
Fastening type:
Push–pull
Cable shape:
Round

Technical details

Sustainability compliance:
Yes

Weight & dimensions

Weight:
0.25 kg

Operational conditions

Operating temperature (T-T):
0 - 70

Packaging data

Package weight:
260 g

Certificates

Compliance certificates:
CE, Federal Communications Commission (FCC), RoHS

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Customer reviews

Customer questions

FAQ

How much does the Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL cost, and is it available for purchase?

The price is 173.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.08.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All BlueOptics products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized BlueOptics service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: cable length, connector 1, connector 2, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for Network Cable BlueOptics DAC-Q28-4S28-25G-2M-BL?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.