# BlueOptics CBL-NTWK-0720-BL InfiniBand fibre optic cable 3 m QSFP 4xSFP+ Black

**URL:** https://aio.lv/en/product--blueoptics-cbl-ntwk-0720-bl--4470583
**Data updated:** 2026-02-25 16:35 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** CBL-NTWK-0720-BL
**EAN:** 4063232060552
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 124.49 €
**Prices and availability valid until:** 2026-08-07 23:59
**Price without VAT (21%):** 102.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-cbl-ntwk-0720-bl--4470583

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 05.08.2026 | free |
| Pickup points | 10.08.2026 | 1.89 EUR |
| Courier delivery to door | 10.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics CBL-NTWK-0720-BL is a 3 m InfiniBand fibre optic cable featuring a QSFP connector on one end and 4xSFP+ connectors on the other. Designed for high-speed data transmission, it ensures reliable connectivity in data centers and networking applications. Its durable construction and efficient design make it ideal for demanding environments.

## Long description

The BlueOptics CBL-NTWK-0720-BL is a 3 m InfiniBand fibre optic cable that provides a QSFP connector on one end and four SFP+ connectors on the other, designed for high-speed data transmission in rack and data centre environments. Its construction supports parallel optical links and minimizes signal loss over short to medium distances, making it suitable for server-to-switch and switch-to-switch connections where low latency and high throughput are required.
Advantages
This InfiniBand fibre optic cable offers multi-lane connectivity through a single QSFP interface, allowing aggregation of four SFP+ channels for simplified cabling and reduced port usage. The 3 m length balances reach and cable management within racks, while the cable’s durable jacket and connector housings protect against wear in dense installations. The design reduces electromagnetic interference and preserves signal integrity for reliable performance in critical networking applications.
Suitable for
 Server-to-switch connections in data centres
 Top-of-rack and middle-of-row network cabling
 High-performance computing (HPC) clusters using InfiniBand interconnects
 Link aggregation or breakout configurations requiring QSFP to 4×SFP+
Key specifications
 Cable type: InfiniBand fibre optic cable with QSFP to 4×SFP+ configuration
 Length: 3 meters
 Connector 1: QSFP (quad small form-factor pluggable)
 Connector 2: Four SFP+ connectors
 Optical medium: multimode fibre suitable for short to medium reach parallel links
 Application: high-speed data transmission, low latency networking
 Jacket: durable outer sheath for rack and data centre environments
How to use
Install the cable by inserting the QSFP end into a compatible QSFP port on a switch or network adapter and connect the four SFP+ ends to the corresponding SFP+ ports on target devices. Ensure connectors are clean and aligned before insertion, and route the cable to avoid sharp bends or compression that could affect optical performance. Verify link status on the connected devices and confirm aggregation or breakout settings in the network configuration when using multi-lane or split-mode operation.
Usage recommendations
For optimal performance, keep connector end-faces protected with dust caps until installation, avoid tight bends with a radius smaller than the manufacturer’s recommendation, and use appropriate cable management to prevent strain on connectors. Regularly inspect connectors and clean with proper fibre optic cleaning tools if signal degradation is observed.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.25 kg |
| Package weight | 260 g |
| Cable length | 3 m |
| Data transfer rate | 40 Gbit/s |
| Product colour | Black |
| Connector 1 | QSFP |
| Connector 2 | 4xSFP+ |
| Connector gender | Female |
| InfiniBand protocol | Yes |

## FAQ

### How much does the InfiniBand fibre optic cable BlueOptics CBL-NTWK-0720-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 05.08.2026 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. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/4470583/64300333_large.webp