# Network Cable BlueLAN QSFP28-4SFP28-DAC-2M QSFP28 to 4x25GBASE-CR SFP28 100GBASE-CR4 2m Blue

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-na-bl--10894285
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-NA-BL
**EAN:** 4063232122717
**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-na-bl--10894285

## 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 Direct Attach Breakout Cable designed for high-speed data transfer. It features a QSFP28 connector on one end and four SFP28 connectors on the other, supporting 100GBASE-CR4 and 4x25GBASE-CR standards. With a length of 2 meters and AWG26 wire gauge, it ensures reliable performance and minimal signal loss, making it ideal for data centers and high-performance computing environments.

## Long description

The BlueLAN QSFP28-4SFP28-DAC-2M is a passive Direct Attach Breakout Cable designed for high-density, short-reach interconnects in data centers and networking racks. One end terminates in a QSFP28 connector while the other end provides four SFP28 connectors, enabling a single 100G link to be split into four independent 25G channels. The 2 meter length and AWG26 conductor gauge deliver low insertion loss and predictable electrical performance for 100GBASE-CR4 and 4x25GBASE-CR applications.
Advantages
This breakout cable offers a straightforward, energy-efficient way to connect QSFP28 ports to multiple SFP28 ports without active electronics, reducing latency and eliminating the need for transceivers. Passive construction ensures compatibility with standard copper-based CR and CR4 deployments while keeping power consumption minimal. The integrated four SFP28 connectors simplify rack cabling and reduce the number of separate cables required for multi-lane 25G connections.
Suitable for
 Interconnects between top-of-rack switches and server NICs supporting 25G
 Aggregating four 25G links into a single 100G QSFP28 port
 High-performance computing clusters with short-reach copper links
 Data center patching and spine-to-leaf connections within the same rack or adjacent racks
Key specifications
 Connector types: QSFP28 to 4 × SFP28
 Cable type: Passive direct attach copper breakout
 Supported standards: 100GBASE-CR4, 4×25GBASE-CR
 Length: 2 meters
 Conductor gauge: AWG26
 Lane configuration: One 100G lane split into four independent 25G lanes
How to use
Insert the QSFP28 end into the 100G QSFP28 port and each SFP28 plug into the corresponding 25G-capable SFP28 ports on servers, switches or NICs. Ensure devices are powered down or port LEDs indicate readiness according to your equipment’s hot-plug guidelines, then verify link status in the switch or host interface. No additional transceivers or power supplies are required for passive operation. If link training or speed negotiation is supported by the devices, confirm the ports are configured for 25G or 100G as appropriate.
Usage recommendations
 Use this cable for short-reach copper connections within racks or between adjacent racks; avoid routes with tight bends or crushing forces to maintain signal integrity. Verify compatibility with your switch and NIC vendor documentation for passive DAC support and any required port settings. For longer runs or if vendor interoperability requires, consider active solutions or fiber-based transceivers instead of passive direct attach copper.

## 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