# 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-cp-bl--10894257
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-CP-BL
**EAN:** 4063232122595
**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-cp-bl--10894257

## 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 QSFP28-4SFP28-DAC-2M is a passive 100GBASE-CR4 cable designed for high-speed data transmission. It features a QSFP28 connector on one end and four SFP28 connectors on the other, allowing for a direct attach breakout configuration. 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 100GBASE-CR4 direct attach breakout cable engineered for high-speed short-reach connections. One end terminates in a QSFP28 plug while the other end splits into four SFP28 plugs, enabling direct connectivity between a 100G QSFP28 port and four 25G SFP28 ports without additional transceivers. With a 2 meter length and AWG26 conductor gauge, this cable provides low insertion loss and consistent signal integrity for data center top-of-rack, leaf-spine and server interconnects.
Advantages
This direct attach cable offers a cost-effective and energy-efficient solution for linking 100G and 25G equipment with minimal latency and no active electronics. The QSFP28-to-4xSFP28 breakout design simplifies port management by converting one high-density port into four independent 25G links. Its passive construction reduces power consumption compared with active optical transceivers and supports predictable performance in controlled short-reach environments. The 2 m length balances flexibility and neat cable routing within racks and cable trays.
Suitable for
 Data center blade servers and top-of-rack switches requiring 100G-to-4×25G breakout links
 Leaf-spine architectures connecting aggregation switches to access switches or servers
 High-performance computing clusters where low-latency 25G links are needed
 Short-reach backplane replacements or patching within the same equipment room
Key specifications
 Interface: QSFP28 (one end) to 4 × SFP28 (other end)
 Data rate: 100G aggregated (4 × 25G lanes)
 Standard: 100GBASE-CR4 / 25GBASE-CR
 Length: 2 meters
 Conductor gauge: AWG26
 Type: Passive copper direct attach breakout cable
 Connector gender: Plug-to-plug with breakout harness
How to use
Install the cable by inserting the QSFP28 plug into the 100G QSFP28 port and insert each SFP28 plug into the respective 25G SFP28 ports on the target device. Ensure devices are powered down or ports are disabled if required by the equipment vendor prior to insertion. Verify link status and speed in the switch or server management interface after physical connection. Route the cable to avoid sharp bends or excessive tension; maintain a bend radius appropriate for AWG26 copper cabling to preserve signal quality.
Usage recommendations
For reliable operation, use this passive breakout cable for short-distance links inside racks or between adjacent racks within the same room. Confirm compatibility with your switch or server vendor for direct-attach passive cables and ensure firmware or port configuration supports breakout mode where needed.

## 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 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