# Network Cable BlueOptics ET7402-25DAC-2M-BL QSFP28 4xSFP28 InfiniBand 2m Black

**URL:** https://aio.lv/en/product--blueoptics-et7402-25dac-2m-bl--10894275
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** ET7402-25DAC-2M-BL
**EAN:** 4063232290003
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 173.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 143.38 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-et7402-25dac-2m-bl--10894275

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

The BlueOptics ET7402-25DAC-2M-BL is a high-quality InfiniBand/fibre optic cable designed for efficient data transmission. With a length of 2 meters, it features a QSFP28 connector on one end and four SFP28 connectors on the other, allowing for versatile connectivity. This cable is ideal for high-speed networking applications, providing reliable performance and durability. Its male/male connector design ensures easy installation and compatibility with various devices.

## Long description

The BlueOptics ET7402-25DAC-2M-BL QSFP28 4xSFP28 InfiniBand 2m Black is a passive direct attach cable engineered for short-reach, high-bandwidth data links in data centre and networking environments. At 2 meters length it connects a QSFP28 port to four SFP28 ports, enabling aggregation or breakout of a 100Gb/s QSFP28 link into four independent 25Gb/s SFP28 channels. The cable uses a male-to-male connector configuration, a black jacket for unobtrusive routing, and a compact design that simplifies rack and switch interconnects while delivering predictable electrical performance.
Advantages
This BlueOptics breakout cable provides native QSFP28-to-4xSFP28 compatibility for InfiniBand and Ethernet deployments, reducing the need for additional transceivers and adapters. Its fixed 2 m length limits signal attenuation and keeps latency low while offering mechanical robustness and reliable connector seating. The black outer jacket improves cable management visibility in dense cabling runs and the lightweight construction supports easy installation and reconfiguration.
Suitable for
 Breaking out a 100Gb/s QSFP28 port into four 25Gb/s SFP28 links
 Short-reach interconnects between switches, routers, and servers in racks
 InfiniBand clusters and high-performance computing network topologies
 Data centre aggregation and top-of-rack switch connections
Key specifications
 Cable length: 2 m
 Connector 1: QSFP28 (male)
 Connector 2: 4x SFP28 (male)
 Supported protocol: InfiniBand and 25/100GbE-compatible electrical interface
 Product colour: Black
 Weight: 0.25 kg
How to use
Install the BlueOptics ET7402-25DAC-2M-BL by inserting the QSFP28 end into the host QSFP28 port and the four SFP28 ends into the respective SFP28 ports on the target devices. Ensure each connector is fully engaged and the latch mechanisms click into place. Confirm link status on connected devices and check system LEDs or management interfaces to verify the lanes are enumerated as four separate 25Gb/s links where supported. Avoid sharp bends and excessive force when routing the cable inside racks.
Usage recommendations
Use this cable for short-distance connections within the same rack or adjacent racks to maintain signal integrity. Keep bend radius within manufacturer guidelines, avoid kinking, and route away from heavy power cables to reduce potential interference. Verify compatibility with device firmware that supports QSFP28-to-SFP28 breakout mode before deployment.

## Specifications

| Feature | Value |
|---|---|
| Data transfer rate | 100000 Gbit/s |
| InfiniBand protocol | Yes |

### Features

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| Sustainability compliance | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.25 kg |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 70 |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 260 g |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | CE, Federal Communications Commission (FCC), RoHS |

## FAQ

### How much does the Network Cable BlueOptics ET7402-25DAC-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 — 56 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. More information about warranty service: https://aio.lv/en/warranty

### 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 ET7402-25DAC-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.

## Image

https://aio.lv/img/cache/product/10894275/64098922_large.webp