# Direct Attach DAC cable CBO QSFP28-DAC-0.5M 0.5m QSFP28 to QSFP28 passive copper cable

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-va-bl--4466767
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-VA-BL
**EAN:** 4063232100852
**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-va-bl--4466767

## 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

CBO QSFP28-DAC-0.5M is a 0.5 m passive Direct Attach Copper (DAC) cable with QSFP28 connectors at both ends for short-range 100Gbps interconnects. Designed for server, switch and router connections in data centers and high-performance networks, it provides low-latency, low-power connectivity for top-of-rack and adjacent-rack links.

## Long description

CBO QSFP28-DAC-0.5M is a 0.5 m passive Direct Attach Copper (DAC) cable with QSFP28 connectors at both ends, engineered for short-range 100Gbps interconnects. It is intended for use in data centers and high-performance networks to connect servers, switches and routers. The cable provides a compact, low-latency, and low-power alternative to optical transceivers for short-distance links such as top-of-rack and adjacent-rack connections.
Advantages
This passive QSFP28-to-QSFP28 DAC cable delivers 100Gbps aggregated throughput with minimal signal processing and reduced power consumption compared with active optical modules. Its short 0.5 m length minimizes insertion loss and latency while simplifying cable management in dense rack environments. The copper construction eliminates the need for separate transceivers, lowering both acquisition and operating costs for short-range links. The standardized QSFP28 connectors ensure compatibility with equipment ports that support QSFP28 direct-attach copper interfaces.
Suitable for
Top-of-rack switch to server high-bandwidth links
Adjacent rack or chassis interconnects in data centers
High-performance computing clusters requiring low-latency connectivity
Short-reach 100Gbps uplinks inside network racks
Key specifications
Connector type: QSFP28 to QSFP28
Cable type: Passive Direct Attach Copper (DAC)
Data rate: 100 Gbps
Length: 0.5 m
Typical applications: Short-range interconnects in data centers and network equipment
Latency: minimal due to copper direct-attach design
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on networking equipment until the connector latches securely. Ensure that both endpoints support passive QSFP28 DAC connections and that port settings (speed and lane configuration) are configured to match 100Gbps operation if required by the switch or server. Avoid excessive bending or pulling on the cable; maintain the recommended bend radius to prevent mechanical stress. For installation, route the cable to minimize interference with airflow and other cables within the rack.
Usage recommendations
Use this 0.5 m passive DAC cable for short, fixed-length 100Gbps links where low-latency and low-power operation are priorities. Verify compatibility with your equipment’s QSFP28 ports and with the vendor’s hardware compatibility list before deployment. Store and handle the cable in a clean environment and avoid sharp bends or kinks to preserve signal integrity.

## FAQ

### How much does the CBO QSFP28-DAC-0.5M 0.5m Direct Attach 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/4466767/59855542_large.webp