# Network Cable BlueLAN QSFP28-4SFP28-DAC-2M QSFP28 to 4x25GBASE-CR SFP28 Direct Attach Breakout Cable 2m Blue

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-ib-bl--10894251
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-IB-BL
**EAN:** 4063232122779
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 173.49 €
**Prices and availability valid until:** 2026-08-28 23:59
**Price without VAT (21%):** 143.38 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-ib-bl--10894251

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.08.2026 | free |
| Pickup points | 01.09.2026 | 1.79 EUR |
| Courier delivery to door | 01.09.2026 | 4.99 EUR |

## Summary description

The BlueLAN QSFP28-4SFP28-DAC-2M is a passive 100GBASE-CR4 cable that connects a QSFP28 port to four SFP28 ports. With a length of 2 meters and AWG26 gauge, it ensures high-speed data transfer and reliable performance. Ideal for data centers and high-performance computing environments, this cable is designed for efficient signal integrity and minimal latency.

## Long description

The BlueLAN QSFP28-4SFP28-DAC-2M is a passive breakout direct-attach cable that links a single QSFP28 100G port to four independent SFP28 25G ports. At 2 meters length and AWG26 conductor gauge, this cable provides a low-latency physical connection suitable for short-reach interconnects inside racks and between adjacent switches or servers. It supports 100GBASE-CR4 electrical signaling on the QSFP28 side and four 25GBASE-CR SFP28 channels, enabling aggregation or breakout of high-speed lanes without active optics.
Advantages
This direct attach copper cable offers straightforward deployment with no additional transceivers or power required, reducing component count and operational complexity. The AWG26 construction and passive design deliver consistent signal integrity for short-distance links and help minimize latency. A 2 m length balances reach and manageability inside dense rack environments, and the QSFP28-to-4xSFP28 breakout format enables flexible port consolidation and architecture simplification.
Suitable for
High-density rack interconnects between switches and top-of-rack devices
Server to switch connections in short-reach data center topologies
25G lane breakout from a 100G QSFP28 port for aggregation or testing
High-performance computing clusters requiring low-latency links
Key specifications
Connector types: QSFP28 (one end) to 4 × SFP28 (other end)
Supported standards: 100GBASE-CR4 on QSFP28 side, 25GBASE-CR on SFP28 channels
Length: 2 meters
Cable gauge: AWG26
Passive direct-attach copper (DAC) construction
Breakout configuration: 1× QSFP28 to 4× SFP28
How to use
Unpack the cable and inspect both connector ends for damage or debris before installation. Align the QSFP28 connector with the 100G port and insert until it seats; route the cable to avoid tight bends and secure it to prevent strain. Plug each SFP28 connector into the corresponding 25G ports on the target devices. After physical connection, verify link status and channel negotiation on connected devices; no external power or transceiver modules are required for this passive breakout cable.
Usage recommendations
For reliable performance, use this passive DAC for short-reach connections within the same rack or adjacent racks. Avoid routing the cable near sources of electromagnetic interference and maintain bend radii consistent with manufacturer guidance. Confirm that the host ports support passive QSFP28-to-SFP28 breakout operation and compatible speed settings before deployment.

## FAQ

### How much does the Network Cable BlueLAN QSFP28-4SFP28-DAC-2M cost, and is it available for purchase?

The price is 173.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 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 27.08.2026 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