# Copper DAC cable CBO QSFP28-DAC-0.5M 0.5 m passive for QSFP28 ports

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-cp-bl--4466741
**Data updated:** 2026-02-24 11:00 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-CP-BL
**EAN:** 4063232100487
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 93.49 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 77.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-cp-bl--4466741

## 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 DAC cable CBO QSFP28-DAC-0.5M, 0.5 m, designed for direct connection between QSFP28 ports. Provides a short-range, low-latency, cost-effective link without external transceivers. Suitable for high-speed 100GbE or InfiniBand environments where server, switch or storage devices require QSFP28 direct attach cabling in racks or data centers.

## Long description

Passive copper DAC cable CBO QSFP28-DAC-0.5M is a 0.5 m direct-attach cable engineered for short-range high-speed links between devices with QSFP28 ports. The cable provides a direct electrical connection without the need for separate optical transceivers, enabling low-latency, power-efficient interconnects in rack and data center environments. It supports typical QSFP28 applications such as 100GbE and InfiniBand and is intended for connections between servers, switches and storage systems where short-distance, high-bandwidth links are required.
Advantages
The passive copper DAC design delivers consistent signal integrity for short distances while keeping power consumption and heat generation minimal compared with active optical solutions. Installation is straightforward: the integrated QSFP28 connectors plug directly into compatible ports, reducing hardware complexity and total cost of ownership. Because it is a copper-based direct attach option, it avoids the recurring expense of separate transceivers and fiber patching for short-range interconnects.
Suitable for
 Short-range 100GbE links within racks
 High-performance InfiniBand connections between adjacent devices
 Server-to-switch or switch-to-switch direct connections in data centers
 High-density rack deployments requiring compact, low-power cabling
Key specifications
 Cable type: passive copper direct attach cable
 Connector type: QSFP28 to QSFP28
 Length: 0.5 m
 Application: 100 Gigabit Ethernet and InfiniBand compatible environments
 Typical use: short-reach, low-latency interconnects in racks and data centers
How to use
Ensure both devices support QSFP28 direct-attach copper connections and that ports are powered down or follow hot-plug procedures recommended by the equipment vendor. Align the QSFP28 connectors and insert them fully into the ports until the retention latch engages. After installation, verify link status using the host or switch diagnostics and confirm negotiated speed and lane mapping. For removal, release the retention mechanism and pull the connector straight out to avoid stressing the cable assembly.
Usage recommendations
Use this 0.5 m passive DAC for short interconnects where low latency and minimal power overhead are priorities. Avoid routing near heat sources or sharp bends; maintain recommended bend radius and secure the cable to prevent strain on connectors. For distances beyond short rack spans or when optical reach is required, consider active or fiber-based alternatives.

## FAQ

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

The price is 93.49 € (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/4466741/59858084_large.webp