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header-product Network Cable BlueOptics 721064-B21-BL QSFP 4xSFP+ InfiniBand 3m Black
124.49 €

Network Cable BlueOptics 721064-B21-BL QSFP 4xSFP+ InfiniBand 3m Black

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Network Cable BlueOptics 721064-B21-BL Photo 1
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Network Cable BlueOptics 721064-B21-BL Photo 9
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Network Cable BlueOptics 721064-B21-BL QSFP 4xSFP+ InfiniBand 3m Black

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Short description

The BlueOptics 721064-B21-BL is a high-quality 3-meter InfiniBand/fibre optic cable featuring a QSFP connector and four SFP+ connectors. This cable is designed for high-speed data transmission, ensuring reliable performance in data centers and networking environments. With male/male connectors, it provides easy connectivity and flexibility for various setups. The durable black design ensures longevity and resistance to wear, making it an ideal choice for professional use.
Available for order: 9 pcs.
Warranty: 2 Years
SKU: 11024793
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
27.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
30.07.2026 {{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
30.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Payment Methods:
Bank transfer
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Product information

Description

The BlueOptics 721064-B21-BL QSFP 4xSFP+ InfiniBand 3m is a 3-metre direct attach cable designed for short-range, high-speed connections in racks and between adjacent racks. It features a QSFP (Quad Small Form-factor Pluggable) male connector on one end and four SFP+ (Small Form-factor Pluggable Plus) male connectors on the other, supporting aggregated 40 Gbps links or four independent 10 Gbps channels. The cable uses passive twinax copper construction (30 AWG) suitable for electrical signal transmission over short distances and is offered in a durable black jacket for professional networking environments.

Advantages

This BlueOptics/BlueLAN compatible DAC offers a low-latency, low-power connection for high-density network setups. Being MSA-compliant and manufactured from components from established vendors, the cable provides predictable interoperability with major switch, router and storage platforms that support the original form factor and signalling standards. Its passive design reduces failure points and power consumption, while the compact QSFP-to-4xSFP+ form factor allows flexible deployment where a 40G port needs to be split into multiple 10G ports.

Suitable for

  • Connecting 40G QSFP ports to four 10G SFP+ ports in data center racks
  • Short-range links between adjacent racks or within the same rack
  • Aggregated 40G Ethernet, FCoE, Fibre Channel or InfiniBand connections up to 3 m
  • High-density switch, router and storage interconnects requiring low latency

Key specifications

  • Cable length: 3 m
  • Connector configuration: QSFP (male) to 4 × SFP+ (male)
  • Transmission type: passive twinax copper (DAC), 30 AWG
  • Supported data rates: up to 40 Gbps aggregate (4 × 10 Gbps channels)
  • Typical applications: Ethernet, FCoE, Fibre Channel, InfiniBand
  • Product colour: Black
  • Weight: approx. 0.25 kg

How to use

Verify that both ends of the connected devices support passive QSFP-to-4xSFP+ direct attach cabling and the intended protocols (Ethernet, FCoE, Fibre Channel or InfiniBand). Insert the QSFP connector into the 40G QSFP port and plug the SFP+ connectors into the respective 10G SFP+ ports, ensuring proper seating and latch engagement. Route the cable to avoid sharp bends and excessive tension; observe normal ESD precautions when handling connectors. No external power or transceivers are required for passive operation—link activation and negotiation are handled by the connected hardware.

Usage recommendations

For reliable performance, use this DAC within the specified 3 m distance and in environments where the host hardware explicitly supports passive DAC twinax solutions. Avoid repeated flexing near the connector boot and maintain a clear airflow path in rack installations. If interoperability is critical, request a test sample or verify compatibility with your hardware vendor documentation before large deployments.

Specifications

Cable length:
3 m
Connector 1:
QSFP
Connector 2:
4xSFP+
Weight:
0.25 kg
Product colour:
Black
All features
Data transfer rate:
40 Gbit/s
InfiniBand protocol:
Yes

Features

Cable length:
3 m
Connector 1:
QSFP
Connector 2:
4xSFP+
Product colour:
Black

Weight & dimensions

Weight:
0.25 kg

Packaging data

Package weight:
260 g

Description

Machine translation. Load original

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Customer reviews

Customer questions

FAQ

How much does the Network Cable BlueOptics 721064-B21-BL cost, and is it available for purchase?

The price is 124.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 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 27.07.2026 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.
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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Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
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Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
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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.