# Direct Attach Copper (DAC) cable CBO DAC-QSFP-4SFP28-25G 3m QSFP28 to 4× SFP28, 25Gbps per lane

**URL:** https://aio.lv/en/product--blueoptics-dac-qsfp-4sfp28-25g-3m-bl--4465132
**Data updated:** 2026-02-25 16:30 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** DAC-QSFP-4SFP28-25G-3M-BL
**EAN:** 4063232008097
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 192.99 €
**Prices and availability valid until:** 2026-08-23 23:59
**Price without VAT (21%):** 159.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-dac-qsfp-4sfp28-25g-3m-bl--4465132

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.08.2026 | free |
| Pickup points | 26.08.2026 | 1.79 EUR |
| Courier delivery to door | 26.08.2026 | 4.99 EUR |

## Summary description

Passive Direct Attach Copper (DAC) cable from CBO, model DAC-QSFP-4SFP28-25G-3M-BL, 3 meters long. It connects a QSFP28 port to four SFP28 ports and supports 25Gbps per lane for high-density server, switch or storage interconnects. The cable offers a compact, low-latency solution for short-reach links in data centers and network racks.

## Long description

Passive Direct Attach Copper (DAC) cable CBO DAC-QSFP-4SFP28-25G 3m is a 3-metre copper interconnect that links a QSFP28 port to four SFP28 ports and supports 25 Gbps per lane. Designed for short-reach connections in data centers and server racks, this DAC cable provides a compact, low-latency physical link ideal for high-density environments where multiple 25 GbE lanes must be broken out from a single QSFP28 interface.
Advantages
The cable delivers deterministic, low-latency performance with minimal power consumption because it is a passive copper assembly. Its breakout configuration enables flexible port mapping from one QSFP28 to four SFP28 connectors, reducing the need for additional active transceivers or patching. The 3 m length allows convenient rack-level connections while preserving signal integrity for short-reach links.
Suitable for
 Connecting a QSFP28 port to multiple SFP28 ports in top-of-rack switches
 High-density server interconnects requiring multiple 25 Gbps lanes
 Short-reach links between switches, storage arrays and network interface cards
 Environments prioritizing low latency and reduced power consumption
Key specifications
 Connector type: QSFP28 to 4 × SFP28 breakout
 Data rate: 25 Gbps per lane
 Length: 3 metres
 Cable type: Passive copper direct-attach
 Use case: Short-reach, rack-level interconnects
How to use
Insert the QSFP28 end into the source device port and connect each SFP28 plug to the target device ports. Ensure connectors are fully seated and that both ends are compatible with the host hardware. No external power or configuration is required for passive operation; link parameters are negotiated by the connected devices. Verify network interface settings and lane mapping in switch or host firmware if necessary.
Usage recommendations
For optimal performance, use this passive DAC for short-distance connections within the same rack or adjacent racks. Avoid tight bends or kinks in the cable and maintain proper airflow around equipment. Confirm compatibility with device vendor hardware before deployment and keep firmware updated to ensure correct lane mapping and link stability.

## FAQ

### How much does the CBO DAC-QSFP-4SFP28-25G 3m QSFP28 to 4× SFP28 cable 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 21.08.2026 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/4465132/59854102_large.webp