# CBO DAC Cable BlueLAN QSFP28 to 4×SFP28 passive, 3 m

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-3m-ix-bl--4466081
**Data updated:** 2026-02-25 16:31 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-3M-IX-BL
**EAN:** 4063232123035
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 192.99 €
**Prices and availability valid until:** 2026-08-08 23:59
**Price without VAT (21%):** 159.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-3m-ix-bl--4466081

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.08.2026 | free |
| Pickup points | 11.08.2026 | 1.89 EUR |
| Courier delivery to door | 11.08.2026 | 4.99 EUR |

## Summary description

Passive direct-attach copper (DAC) cable from CBO, model BlueLAN QSFP28 to 4×SFP28, 3 metres long. Designed for connecting a QSFP28 port to four SFP28 ports in high-density networking equipment, offering fixed low-latency connections without additional transceivers. Suitable for top-of-rack switches, servers and storage systems where short-reach, cost-effective interconnects are required.

## Long description

The CBO DAC Cable BlueLAN QSFP28 to 4×SFP28 passive, 3 m is a passive direct-attach copper (DAC) assembly designed to link a single QSFP28 port to four SFP28 ports over a short distance. This 3-metre cable provides a fixed, low-latency electrical connection without the need for separate optical transceivers, making it suitable for high-density networking environments such as top-of-rack switches, servers and storage systems where reliable short-reach interconnects are required.
Advantages
The passive DAC design delivers low latency and high signal integrity for short-reach links while avoiding the additional cost and power consumption of active optics. By combining one QSFP28 connector with four SFP28 connectors, the cable enables flexible port mapping and efficient use of switch port density. The 3 m length balances cable management in racks and typical distances between adjacent devices in data centre and enterprise wiring closets.
Suitable for
 Interconnecting top-of-rack switches to aggregation switches or servers
 Linking high-density switch blades to server or storage chassis
 Short-reach connections in data centres and server rooms
 Cost-sensitive environments that require low-power, direct electrical links
Key specifications
 Connector types: QSFP28 (one end) to 4 × SFP28 (other end)
 Cable type: passive direct-attach copper (DAC)
 Length: 3 metres
 Supported data rate: compatible with 25G per SFP28 lane and QSFP28 breakout operation
 Form factor: breakout cable for one-to-four port mapping
 Typical use: short-reach electrical interconnects within racks
How to use
Insert the QSFP28 connector into the QSFP28 port of the host device and insert each SFP28 connector into the corresponding SFP28 ports of the remote device, ensuring correct orientation and secure latching. Confirm that both connected devices support passive DAC breakout operation and the required link speeds (for example 25G per lane). After physical installation, verify link status and speed through the device management interfaces and adjust port configuration if necessary to enable the desired breakout mode.
Usage recommendations
Use this passive DAC cable for short-reach, high-density connections inside racks or between adjacent racks. Avoid tight bends and mechanical stress; maintain minimum bend radius recommended for copper DAC assemblies and secure cables to prevent strain on connectors. For longer distances or environments requiring electrical isolation, consider optical transceivers and fibre cabling instead.

## FAQ

### How much does the CBO BlueLAN QSFP28 to 4×SFP28 DAC cable, 3 m cost, and is it available for purchase?

The price is 192.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 29 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 06.08.2026 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/4466081/59856152_large.webp