# Network Cable BlueLAN CAB-Q28-S28-2M QSFP28 to 4xSFP28 100GBASE-CR4 2M Blue

**URL:** https://aio.lv/en/product--blueoptics-cab-q28-s28-2m-bl--10894201
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** CAB-Q28-S28-2M-BL
**EAN:** 4063232642048
**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-cab-q28-s28-2m-bl--10894201

## 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 CAB-Q28-S28-2M is a 2-meter 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 to 4x25GBASE-CR standards. With AWG26 construction, this cable ensures reliable performance and minimal signal loss, making it ideal for data centers and high-performance computing environments.

## Long description

The BlueLAN CAB-Q28-S28-2M QSFP28 to 4xSFP28 100GBASE-CR4 2M Blue is a 2-meter passive direct attach breakout cable engineered for high-speed short-reach links. It terminates in a single QSFP28 plug and four SFP28 plugs, enabling a 100GBASE-CR4 connection to split into four independent 25GBASE-CR channels. Constructed with AWG26 conductors and designed for minimal insertion loss, this cable is intended for reliable, low-latency connections inside racks and between adjacent switches or servers in data center and high-performance computing installations.
Advantages
This passive breakout cable provides a compact and cost-effective way to deliver 100G connectivity by aggregating or splitting signals between QSFP28 and SFP28 ports without requiring active components. The AWG26 construction offers consistent electrical characteristics for stable signal transmission and reduced attenuation across short distances. With a standardized QSFP28-to-4xSFP28 pinout and a 2 m length, the cable simplifies cabling layouts, reduces the need for additional transceivers, and supports hot-pluggable interoperability with compatible equipment.
Suitable for (tasks / use cases)
Connecting a 100G QSFP28 port to four 25G SFP28 ports for switch-to-switch or switch-to-server links
Top-of-rack and end-of-row short-reach interconnects within data centers
High-performance computing clusters requiring multi-lane 25G channels
Environments where passive DACs reduce power consumption and complexity
Key specifications
Cable type: Passive direct attach breakout cable (DAC)
Length: 2 meters
Connector A: QSFP28 plug
Connector B: 4 × SFP28 plugs
Supported standards: 100GBASE-CR4 to 4×25GBASE-CR
Conductor gauge: AWG26
Usage range: Short-reach, within racks or adjacent racks
How to use
Insert the QSFP28 end into the 100G-capable QSFP28 port on your switch or network device, and insert each SFP28 plug into the corresponding 25G ports on target switches or servers. Ensure devices are powered and support passive breakouts; the cable is hot-pluggable but should be handled gently to avoid bending near connectors. Verify link status on connected equipment and configure port aggregation or individual lane settings as required by your network architecture.
Usage recommendations
Use this 2 m passive breakout cable for short-distance, intra-rack and adjacent-rack connections where low latency and minimal power consumption are priorities. Avoid routing the cable through dense cable bundles with tight bends; maintain manufacturer-recommended bend radius and keep connectors free of dust when not in use.

## FAQ

### How much does the Network Cable BlueLAN CAB-Q28-S28-2M 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