# Copper DAC Cable BlueOptics QSFP28 to 4×SFP28, 3 m length, direct-attach

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-3m-mr-bl--4466083
**Data updated:** 2026-03-12 10:02 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-3M-MR-BL
**EAN:** 4063232123059
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 192.99 €
**Prices and availability valid until:** 2026-08-01 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-mr-bl--4466083

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

Direct-attach copper (DAC) cable BlueOptics QSFP28-4SFP28-DAC-3M is a 3-meter passive interconnect that breaks out a QSFP28 port into four SFP28 ports. It provides short-reach high-speed connectivity for QSFP28-enabled switches and network devices, supporting 25/28/100G applications where direct copper links and low latency are required in rack-to-rack and server-to-switch connections.

## Long description

BlueOptics DAC Cable CBO Meraki QSFP28-4SFP28-DAC-3M 3M Length is a direct attach copper (DAC) cable designed to connect QSFP28 ports to four SFP28 ports within high-speed network environments. The cable provides a fixed 3-meter length for short-reach interconnects inside racks and between adjacent racks, offering a cost-effective, low-latency physical connection for 100G-to-4x25G breakout applications.
Advantages
The DAC cable delivers low electrical latency and predictable performance for 100G QSFP28 to 4×25G SFP28 conversions. As a passive copper assembly it requires no external power or optics modules, which simplifies installation and reduces operating costs. The fixed 3 m length ensures a reliable, stable link for short-range connections while minimizing signal attenuation typical of longer runs.
Suitable for
 Breakout of a 100G QSFP28 port into four independent 25G SFP28 links
 Interconnects within the same rack or between adjacent racks in data centers
 High-throughput switching and server uplinks where short-reach copper connectivity is acceptable
Key specifications
 Connector type: QSFP28 to 4 × SFP28
 Transmission medium: Direct attach copper (DAC)
 Supported data rate: 100G (breakout to 4 × 25G)
 Cable length: 3 meters
 Form factor: Passive twinax assembly for short-reach interconnects
How to use
Insert the QSFP28 end into the 100G QSFP28 port on the source device and plug the four SFP28 ends into the target devices or ports. Ensure ports are powered down or follow hot-swap guidelines from your hardware vendor if applicable. Verify that the host devices support QSFP28 to 4×SFP28 breakout mode and configure interfaces in the switch or router operating system as needed for aggregated or independent 25G links.
Usage recommendations
Use this 3 m DAC cable for intra-rack and adjacent-rack connections where short, low-latency links are required. Confirm compatibility with your network equipment for QSFP28 breakout functionality and observe bend-radius and handling guidelines to maintain cable integrity and signal performance.

## FAQ

### How much does the BlueOptics 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 30.07.2026 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

## Image

https://aio.lv/img/cache/product/4466083/59854122_large.webp