# DAC Cable BlueOptics DAC-Q28-4SFP28-25G-5M QSFP28 4xSFP28 5m

**URL:** https://aio.lv/en/product--blueoptics-dac-q28-4sfp28-25g-5m-bl--4470675
**Data updated:** 2026-02-25 16:35 (EET)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** DAC-Q28-4SFP28-25G-5M-BL
**EAN:** 4063232642161
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 257.99 €
**Prices and availability valid until:** 2026-08-15 23:59
**Price without VAT (21%):** 213.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-dac-q28-4sfp28-25g-5m-bl--4470675

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.08.2026 | free |
| Pickup points | 18.08.2026 | 1.89 EUR |
| Courier delivery to door | 18.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics DAC-Q28-4SFP28-25G-5M is a high-performance DAC cable designed for data centers and networking applications. It features a QSFP28 connector on one end and four SFP28 connectors on the other, allowing for efficient data transmission over a distance of 5 meters. This cable is ideal for connecting high-speed devices in a compact form factor, ensuring reliable performance and minimal latency.

## Long description

The BlueOptics DAC-Q28-4SFP28-25G-5M QSFP28 4xSFP28 5m is a direct attach copper (DAC) cable engineered for short-reach, high-bandwidth interconnects in data centers and network racks. One end of the cable uses a QSFP28 connector while the other terminates in four SFP28 connectors, enabling aggregation or breakout of a 100Gbps interface into four 25Gbps lanes over a 5 metre copper link. The cable comes in a compact, flexible black jacket suitable for dense cabling environments and low-latency links between switches, servers, and storage systems.
Advantages
This DAC cable provides a cost-efficient, low-power alternative to optical transceivers for short distances, offering native support for 25G per lane speeds and reliable signal integrity across the specified 5 m span. Its integrated breakout configuration simplifies connectivity where a single QSFP28 port must connect to multiple SFP28 ports without additional transceiver modules. The copper construction eliminates the need for separate fiber patching and reduces overall port and module costs while maintaining predictable latency and signal performance.
Suitable for
Breaking out a QSFP28 100Gbps port into four independent 25Gbps SFP28 links
High-density top-of-rack and end-of-row switch interconnects
Server-to-switch and switch-to-storage short-reach connections within the same rack or adjacent racks
Low-latency, high-bandwidth links in virtualized and hyper-converged environments
Key specifications
Connector 1: QSFP28
Connector 2: 4 × SFP28 (breakout)
Supported per-lane speed: 25 Gbps
Total aggregated throughput: 100 Gbps (4 × 25 Gbps)
Cable length: 5 metres
Cable type: Direct Attach Copper (DAC)
Jacket colour: Black
How to use
Ensure both devices support QSFP28-to-4×SFP28 breakout connections and that ports are configured for the desired interface rates. Power down or follow the hot-plug guidance of your hardware before connecting if recommended by the vendor. Insert the QSFP28 end firmly into the QSFP28 port and route the cable to avoid sharp bends, then insert each SFP28 connector into the destination SFP28 ports. Verify link status and speed on each SFP28 lane through device management interfaces and perform any required firmware or port configuration such as lane mapping or speed negotiation.
Usage recommendations
Use this DAC cable for short-reach links up to 5 m in controlled data center environments. Avoid excessive bending and mechanical stress on connectors, keep the cable away from high electromagnetic interference sources, and confirm compatibility with your switch and server models before deployment to ensure optimal performance.

## Specifications

| Feature | Value |
|---|---|
| Data transfer rate | 100 Gbit/s |
| Connector 1 | QSFP28 |
| Connector 2 | 4xSFP28 |
| InfiniBand protocol | Yes |

### Other features

| Feature | Value |
|---|---|
| Cable length | 5 m |

### Features

| Feature | Value |
|---|---|
| Product colour | Black |

## FAQ

### How much does the DAC Cable BlueOptics DAC-Q28-4SFP28-25G-5M cost, and is it available for purchase?

The price is 257.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 21 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 13.08.2026 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: 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.

## Image

https://aio.lv/img/cache/product/4470675/64300523_large.webp