# CBO DAC Cable QSFP28-DAC-0.5M 0.5m Passive Copper direct-attach cable QSFP28

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-ee-bl--4466742
**Data updated:** 2026-02-24 11:00 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-EE-BL
**EAN:** 4063232100548
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 87.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-ee-bl--4466742

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

Passive copper direct-attach cable (DAC) CBO QSFP28-DAC-0.5M, 0.5 m length, designed for QSFP28 ports. Provides a fixed short-reach connection between compatible network devices such as switches, routers and servers supporting QSFP28 interfaces. Ideal for low-latency, high-density rack environments where a short, reliable copper link is required.

## Long description

The CBO DAC Cable QSFP28-DAC-0.5M is a 0.5 metre passive copper direct-attach cable designed for QSFP28 ports. It provides a fixed short-reach electrical connection between compatible network devices such as switches, routers and servers with QSFP28 interfaces. The cable supports high-density rack deployments and low-latency links where a reliable, short copper connection is preferred over optical transceivers.
Advantages
This passive DAC cable offers low latency and deterministic signal behaviour thanks to its direct copper connection. Its short 0.5 m length reduces cable management complexity in high-density racks and helps maintain airflow and neat patching. The integrated QSFP28 connectors require no separate transceivers, which simplifies deployment and reduces power consumption compared to active optics. The construction delivers a durable, fixed-link solution suitable for stable short-reach interconnects.
Suitable for
 Short-reach links between QSFP28-equipped switches in the same rack or adjacent racks
 Server-to-switch connections in high-density data centre environments
 Top-of-rack interconnects where low latency and compact cabling are required
Key specifications
 Interface type: QSFP28 to QSFP28 passive direct-attach copper
 Cable length: 0.5 m
 Form factor: Fixed twin-ax copper assembly with integrated connectors
 Data rate compatibility: Designed for 100Gbps QSFP28 links (backward compatibility depends on host equipment)
 Use case: Short-reach, within-rack or adjacent-rack connections
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on the network devices until the connector latch engages. Ensure both devices are powered and that their ports are configured for the intended link speed and mode. No additional transceivers, drivers, or external power are required for the passive cable itself. For proper cable routing, avoid sharp bends and secure the cable to prevent strain on the connectors.
Usage recommendations
Verify compatibility with the host devices' QSFP28 ports and supported cable types before installation. Use the 0.5 m passive DAC for within-rack or adjacent-rack connections where short, low-latency links are needed. Maintain appropriate bend radius and avoid placing the cable under tension to preserve signal integrity and connector longevity.

## FAQ

### How much does the CBO QSFP28-DAC-0.5M 0.5m DAC cable cost, and is it available for purchase?

The price is 105.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 228 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 27.07.2026 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

## Image

https://aio.lv/img/cache/product/4466742/59856715_large.webp