# Network Cable BlueLAN QFX-Q-S-DAC-2M QSFP28 to 4xSFP28 100GBASE-CR4 2M Blue

**URL:** https://aio.lv/en/product--blueoptics-qfx-q-s-dac-2m-bl--10894319
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QFX-Q-S-DAC-2M-BL
**EAN:** 4063232642116
**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-qfx-q-s-dac-2m-bl--10894319

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.08.2026 | free |
| Pickup points | 31.08.2026 | 1.79 EUR |
| Courier delivery to door | 31.08.2026 | 4.99 EUR |

## Summary description

The BlueLAN QFX-Q-S-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 25GBASE-CR standards. With a length of 2 meters and AWG26 gauge, it ensures reliable performance and minimal signal loss, making it ideal for data centers and high-performance computing environments.

## Long description

The BlueLAN QFX-Q-S-DAC-2M is a passive direct-attach breakout network cable that connects a single QSFP28 port to four SFP28 ports. Designed for short-range, high-throughput links, this 2-meter cable supports 100GBASE-CR4 and 25GBASE-CR electrical standards and uses AWG26 conductors to provide low insertion loss and consistent signal integrity in rack-to-rack and within-rack deployments. The cable is intended for high-density switch and server interconnects, enabling consolidation of four 25 Gbit/s lanes into a single 100 Gbit/s interface without active components.
Advantages
The breakout design simplifies migration and port consolidation by allowing direct connectivity between QSFP28 and multiple SFP28 ports while avoiding additional transceivers. Passive construction reduces power consumption and heat generation compared with active or optical transceivers. With a 2 m length and AWG26 wiring, the cable delivers predictable electrical performance for short-reach links commonly found in data centers and high-performance computing racks.
Suitable for
 100G switch to 4×25G server or NIC connections
 High-density top-of-rack and middle-of-row networking
 Short-reach interconnects inside racks and between adjacent racks
 Migration paths from 25G infrastructures to consolidated 100G ports
Key specifications
 Connector type: QSFP28 to 4×SFP28 breakout
 Supported standards: 100GBASE-CR4 and 25GBASE-CR
 Length: 2 meters
 Conductor gauge: AWG26
 Passive direct-attach construction (no active electronics)
 Typical application: short-reach copper interconnects
How to use
Insert the QSFP28 end into a compatible 100G switch or adapter port and plug the four SFP28 ends into the target server or NIC SFP28 ports. Ensure ports and devices support passive DAC operation and the listed electrical standards before installation. Route the cable to avoid sharp bends and excessive tension; maintain manufacturer-recommended bend radius around cable pathways. Verify link status and speed on connected devices after insertion to confirm proper operation.
Usage recommendations
Use this passive 2 m breakout cable for short, high-throughput connections in data center environments. Avoid using it for extended distances beyond the supported short-reach electrical specifications. For environments requiring extended reach, active cables or optical transceivers with fiber are recommended.

## FAQ

### How much does the Network Cable BlueLAN QFX-Q-S-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 26.08.2026 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