# 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-pa-bl--10894283
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-PA-BL
**EAN:** 4063232122731
**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-pa-bl--10894283

## 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 transmission. 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 gauge, this cable 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 engineered for short-reach high-speed connections in data center and high-performance computing infrastructures. One end uses a QSFP28 connector while the other end breaks out into four SFP28 connectors, enabling a single 100G port to split into four independent 25G links. At 2 meters length and AWG26 conductor gauge, the cable delivers a low-loss copper connection suitable for top-of-rack, spine-to-leaf, and switch-to-server interconnects compliant with 100GBASE-CR4 and 4x25GBASE-CR signalling.
Advantages
This breakout DAC provides deterministic latency and power-efficient operation because it is a passive copper assembly requiring no external power or optics. The integrated QSFP28-to-4xSFP28 design reduces port adapter complexity and saves rack space by consolidating multiple 25G links into a single 100G interface. Its AWG26 conductors and 2 m length optimize signal integrity for short interconnects while minimizing insertion loss and crosstalk typical for high-density cabling.
Suitable for
 Top-of-rack switch to server direct connections
 Spine-to-leaf aggregation links within the same equipment room
 High-performance computing cluster interconnects
 Consolidating four 25G ports into a single 100G port for switch uplinks
Key specifications
 Connector type: QSFP28 (one end) to 4 × SFP28 (other end)
 Supported standards: 100GBASE-CR4 and 4×25GBASE-CR
 Cable type: Passive direct attach copper (DAC)
 Length: 2 meters
 Conductor gauge: AWG26
 Typical use: Short-reach copper interconnects in racks and equipment rooms
How to use
Insert the QSFP28 plug into the 100G-capable QSFP28 port on a switch or network device, and insert each SFP28 plug into the corresponding 25G SFP28 ports on the target devices. Ensure both ends are fully seated and that link LEDs indicate active connections. No external power or configuration is required for the passive cable itself, but verify that connected devices are configured for the intended 100G or 25G modes and that firmware supports passive DAC breakout operation.
Usage recommendations
Use this cable for short-distance, high-bandwidth connections inside racks or between adjacent racks. Avoid tight bends and excessive pulling force; observe minimum bend radius as recommended by the equipment vendor to maintain signal integrity. Confirm compatibility with switch firmware and port break-out capabilities before deployment, and keep cable runs within recommended maximum lengths for passive DACs to ensure reliable performance.

## 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