# CBO QSFP28-DAC-0.5M Passive Copper DAC Cable 0.5 m

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-f5-bl--4466743
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-F5-BL
**EAN:** 4063232100555
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 104.49 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 86.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-f5-bl--4466743

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

Passive copper Direct Attach Cable (DAC) CBO QSFP28-DAC-0.5M, length 0.5 m. Designed for QSFP28 ports, this short-reach cable provides a low-latency, energy-efficient direct connection between compatible networking equipment. Suitable for rack-to-rack or within-rack links in data centres and server rooms where a half-meter passive copper solution is required.

## Long description

The CBO QSFP28-DAC-0.5M Passive Copper DAC Cable 0.5 m is a short-reach direct attach cable designed for QSFP28 ports. This 0.5-metre passive copper assembly provides a straightforward physical connection between compatible networking devices, offering low latency and reduced power consumption compared with active optical solutions. It is intended for high-density environments such as data centres and server rooms where reliable, cost-effective short links are required.
Advantages
The passive copper construction delivers stable signal integrity for short distances while eliminating the need for external optics or transceivers. Its half-metre length minimises cable clutter in racks and simplifies airflow management. The cable supports easy hot-pluggable installation into QSFP28 ports and reduces total system power draw compared with active alternatives. The robust connectors and cable assembly are suitable for repeated insertion and removal during maintenance or reconfiguration.
Suitable for
 Rack-to-rack connections within the same equipment row
 Within-rack links between switches, routers and servers
 High-density top-of-rack switch deployments requiring short, low-latency links
 Environments prioritising energy-efficient, cost-effective interconnects
Key specifications
 Connector type: QSFP28 to QSFP28 compatible
 Cable type: Passive copper Direct Attach Cable (DAC)
 Length: 0.5 m (half metre)
 Use case: Short-reach, direct device interconnect
 Latency: Low-latency physical link suitable for high-throughput applications
 Power: Passive design with no active power draw in the cable itself
How to use
Insert each QSFP28-compatible connector into the corresponding port on the devices to be connected, ensuring the connector latch engages. No additional transceivers or configuration are required at the cable level; device ports should be configured according to the vendor instructions for link speed and protocol. For best results, route the cable to avoid sharp bends and excessive tension, and verify link status LEDs or management interfaces after installation.
Usage recommendations
Use this 0.5 m passive DAC cable for short, direct links within racks or between adjacent racks. Maintain proper bend radius, avoid kinking the cable, and handle connectors by the housing to preserve mechanical integrity. For deployments requiring longer reach or electrical isolation, consider active optical or fibre-based alternatives.

## FAQ

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

The price is 104.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 224 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 10.08.2026 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

## Image

https://aio.lv/img/cache/product/4466743/59856716_large.webp