# Network Cable BlueOptics 4Z57A85044-BL QSFP28 4x SFP28 InfiniBand 2m Black

**URL:** https://aio.lv/en/product--blueoptics-4z57a85044-bl--10894105
**Data updated:** 2026-02-25 16:39 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** 4Z57A85044-BL
**EAN:** 4063232315935
**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-4z57a85044-bl--10894105

## 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 4Z57A85044-BL is a high-performance InfiniBand/fibre optic cable measuring 2 meters. It features a QSFP28 connector on one end and four SFP28 connectors on the other, providing versatile connectivity options. This male-to-male cable is designed for reliable data transmission and is ideal for data centers and high-speed networking applications. Its black color ensures a professional look in any setup.

## Long description

The BlueOptics 4Z57A85044-BL QSFP28 4x SFP28 InfiniBand 2m Black is a 2-metre male-to-male high-performance fibre optic cable designed for InfiniBand and high-speed Ethernet interconnects. One end terminates in a QSFP28 connector and the other splits to four SFP28 connectors, enabling a single QSFP28 port to connect to up to four SFP28 ports. The cable's black jacket and compact form factor are suitable for dense rack environments and professional data centre installations. Its construction focuses on reliable low-latency, high-throughput transmission for server-to-switch, switch-to-switch, or direct-attach scenarios.
Advantages
This cable combines QSFP28 to 4x SFP28 connectivity to provide a flexible and space-saving way to interconnect high-speed ports without additional transceivers. The 2 m length supports common within-rack and short-reach top-of-rack layouts while minimizing excess cabling. The male-to-male termination ensures direct attach compatibility for equipment that supports passive or active DAC/AOC-style direct connections. The black outer jacket offers a neutral appearance and helps keep cabling organized in professional environments.
Suitable for
 Connecting a QSFP28 port to up to four SFP28 ports in data centre racks
 High-speed InfiniBand and 25/100 Gigabit Ethernet short-reach links
 Direct-attach links between servers, switches and storage arrays
 Cabling in dense or constrained rack spaces where a compact cable is required
Key specifications
 Cable length: 2 m
 Connector type (end 1): QSFP28
 Connector type (end 2): 4 × SFP28
 Intended use: InfiniBand and high-speed Ethernet interconnects
 Weight: 0.25 kg
 Colour: Black
How to use
Install the cable by inserting the QSFP28 connector into the QSFP28 port and the four SFP28 connectors into the respective SFP28 ports until each latch engages. Ensure both ends are aligned and fully seated to achieve correct electrical and optical contact. Route the cable to avoid tight bends and sharp edges and secure it with standard cable management to prevent strain on the connectors. Verify link status on connected devices and configure ports according to your network or InfiniBand fabric requirements.
Usage recommendations
For reliable performance, use this cable for short-reach interconnects within racks or between adjacent racks. Avoid bending the cable beyond the manufacturer's recommended minimum bend radius and protect connector endfaces from dust when not in use. Confirm compatibility with your hardware vendor’s QSFP28 and SFP28 port specifications before deployment.

## Specifications

| Feature | Value |
|---|---|
| Data transfer rate | 100 Gbit/s |
| InfiniBand protocol | Yes |

### Features

| Feature | Value |
|---|---|
| Cable length | 2 m |
| Connector 1 | QSFP28 |
| Connector 2 | 4x SFP28 |
| 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 4Z57A85044-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 4Z57A85044-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/10894105/64098886_large.webp