# DAC cable CBO BlueOptics DAC-Q28-S28-3M 3 m, 4x SFP28 direct-attach copper

**URL:** https://aio.lv/en/product--blueoptics-dac-q28-s28-3m-bl--4470676
**Data updated:** 2026-02-25 16:35 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** DAC-Q28-S28-3M-BL
**EAN:** 4063232641898
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 192.99 €
**Prices and availability valid until:** 2026-07-27 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-q28-s28-3m-bl--4470676

## 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

CBO BlueOptics DAC-Q28-S28-3M is a 3‑metre direct-attach copper (DAC) cable with 4 SFP28 connectors. Designed for short-range high-speed connections between SFP28 ports in switches, routers and servers, it provides a cost-effective, low-latency link for 25GbE applications. Ideal for rack-to-rack and in-rack interconnects where optical transceivers are not required.

## Long description

CBO BlueOptics DAC-Q28-S28-3M is a 3 metre direct-attach copper (DAC) cable with four SFP28 connectors, engineered for short-range, high-bandwidth connectivity in data centre and enterprise network environments. It supports 25 Gigabit Ethernet links between SFP28 ports on switches, routers and servers, delivering a low-latency physical connection without the need for separate optical transceivers. The compact, factory-terminated design simplifies rack-to-rack and in-rack interconnects while reducing power consumption and total cost of ownership compared to active or optical cabling solutions.
Advantages
The cable offers a fixed, pre-terminated solution that eliminates the need for separate module purchases and fiber management. Its copper construction provides reliable electrical performance for short distances with minimal signal loss and latency. The integrated SFP28 connectors ensure compatibility with standard SFP28 ports and support line-rate 25GbE traffic. The robust shielding and stranded construction contribute to mechanical durability within cabling bundles and dense rack environments.
Suitable for
25 Gigabit Ethernet connections between switches and Top-of-Rack servers
Short-range rack-to-rack interconnects within data centres
High-density switching environments where cost and power consumption are critical
Environments where optical transceivers are unnecessary or undesirable
Key specifications
Cable type: direct-attach copper (DAC)
Connector type: 4 × SFP28 integrated connectors
Length: 3 metres
Supported link speed: 25 Gigabit Ethernet
Use case range: short-reach, intra-rack and rack-to-rack
Construction: shielded copper assembly for EMI reduction
How to use
Install the DAC cable by inserting each SFP28 connector firmly into the corresponding SFP28 port on your network devices until the latch engages. Ensure devices are powered down or that hot-plug support is enabled and follow the equipment manufacturer’s guidance for hot-swapping. Verify link status and negotiate speed settings on both ends; in many setups the link will auto-negotiate to 25GbE. Route the cable to avoid sharp bends and excessive strain, and secure it within the rack to prevent connector stress during maintenance.
Usage recommendations
Use this DAC cable for reliable short-distance 25GbE links where low latency and lower power consumption are priorities. Avoid using beyond recommended lengths for passive copper DACs, and keep the cable within rack and cabinet environments to maintain signal integrity and mechanical life.

## FAQ

### How much does the DAC cable CBO BlueOptics DAC-Q28-S28-3M 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 — 19 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

## Image

https://aio.lv/img/cache/product/4470676/59856114_large.webp