# Passive Direct Attach Breakout Cable BlueOptics Q28-4S28-DAC-1M-IX-BL 100GBASE-CR4, 1 m, blue

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-1m-ix-bl--5041784
**Data updated:** 2026-03-07 15:12 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-1M-IX-BL
**EAN:** 4063232122359
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 119.49 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 98.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-1m-ix-bl--5041784

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.89 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

Passive Direct Attach Breakout Cable BlueOptics Q28-4S28-DAC-1M-IX-BL is a 1-meter, blue twinax assembly supporting 100GBASE-CR4 connectivity. Designed for short-reach, high-speed interconnects between switches or servers, it provides a fixed, low-latency connection without optical transceivers. Suitable for data center top-of-rack and adjacent-rack links where 100 Gbps copper breakout cabling is required.

## Long description

Passive Direct Attach Breakout Cable BlueOptics Q28-4S28-DAC-1M-IX-BL 100GBASE-CR4, 1 m, blue is a 1‑metre twinax copper assembly engineered for short‑reach 100 Gbps interconnects. The cable implements a fixed 100GBASE‑CR4 electrical interface and splits into four lanes to connect a 100 Gbps port to four 25 Gbps ports or compatible QSFP28/SFP28 configurations. It is intended for direct server-to-switch or switch-to-switch connections in rack and adjacent-rack layouts where a low-latency, cost‑effective copper breakout solution is required.
Advantages
The passive twinax construction delivers low latency and deterministic signal performance without the need for separate optical transceivers, reducing power consumption and component count. As a factory-terminated assembly, it ensures consistent lane mapping and reliable electrical characteristics across the 1 m length. Its blue jacket provides easy visual identification in dense cabling environments, and the compact breakout design simplifies deployment in top-of-rack and adjacent-rack topologies.
Suitable for
 100GBASE-CR4 short-reach links between switches
 Breakout connections from QSFP28 to four 25 Gbps ports
 Top-of-rack and adjacent-rack data center cabling
 High-density copper installations where optical transceivers are not required
Key specifications
 Interface type: 100GBASE-CR4 passive twinax breakout
 Length: 1 metre
 Color: blue jacket for identification
 Lane configuration: 4×25 Gbps lanes
 Connector arrangement: QSFP28 to 4×SFP28-compatible breakout
 Application: short-reach, copper direct-attach interconnect
How to use
Insert the QSFP28 end into the source 100 Gbps port and mate the four SFP28-compatible ends with the target 25 Gbps ports, ensuring correct alignment and secure seating. Route the cable to avoid sharp bends and mechanical strain; maintain the minimum bend radius specified by the manufacturer. No additional transceivers, power, or configuration is required at the cable level — link negotiation and speed configuration are managed by the connected devices according to supported standards.
Usage recommendations
For best performance, use this passive breakout cable for connections up to 1 m and in environments where temperature and electromagnetic conditions are within standard data center operating ranges. Verify compatibility with your switch and server port firmware and port mapping before deployment, and keep the cable free from kinks or tight bundles to preserve signal integrity.

## FAQ

### How much does the BlueOptics Q28-4S28-DAC-1M-IX-BL 100GBASE-CR4 cable cost, and is it available for purchase?

The price is 119.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 24 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 03.08.2026 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