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

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-sw-bl--4466765
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-SW-BL
**EAN:** 4063232100791
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-08-01 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-sw-bl--4466765

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

CBO QSFP28-DAC-0.5M is a 0.5 m passive copper direct attach cable with QSFP28 connectors at both ends. Designed for short-reach interconnects between QSFP28 ports in switches, servers and storage, it provides low-latency, energy-efficient connectivity without optical transceivers. Ideal for top-of-rack and high-density rack deployments where short copper links are sufficient.

## Long description

CBO QSFP28-DAC-0.5M is a 0.5 m passive copper direct attach cable with QSFP28 connectors at both ends, designed for short-reach interconnects between QSFP28 ports in switches, servers and storage. The cable provides a low-latency, energy-efficient alternative to optical transceivers for short links, enabling high-density rack and top-of-rack deployments where copper connectivity meets distance and performance requirements.
Advantages
The passive copper design eliminates the need for separate optical transceivers, reducing power consumption and simplifying inventory management. With QSFP28-to-QSFP28 connectors and a short 0.5 m length, the cable supports high-throughput, low-latency links suitable for adjacent ports in dense installations. Its factory-terminated construction ensures consistent electrical performance and plug-and-play compatibility with QSFP28-capable network equipment that accepts direct-attach copper assemblies.
Suitable for
Interconnects between QSFP28 ports in top-of-rack switches and adjacent servers
High-density rack environments where short copper runs are adequate
Short-reach links in storage arrays and blade chassis
Low-latency connections in data centre aggregation and spine/leaf fabrics
Key specifications
Connector type: QSFP28 to QSFP28
Cable type: Passive copper direct attach cable (DAC)
Length: 0.5 m
Data rate: Supports 100 Gigabit Ethernet signaling over QSFP28 interfaces
Latency: Low electrical latency suitable for short-reach interconnects
Power: Passive assembly — no additional power required for optical conversion
Form factor: Factory-terminated, dual-ended QSFP28 modules
How to use
Insert each QSFP28 connector into the matching QSFP28 port on the network switch, server or storage device until the latch engages. Ensure that both ports are QSFP28-capable and configured for the intended 100GbE channel or compatible breakout mode if applicable. No transceiver modules or additional cabling are required; the direct attach cable establishes the electrical link once seated and latched. Check equipment compatibility lists if the host vendor specifies supported direct-attach assemblies.
Usage recommendations
Use the 0.5 m passive DAC for short, adjacent-port connections inside a rack or between closely mounted devices. Avoid excessive bending near the connector ends and keep the cable within recommended bend radii. For runs beyond short interconnect distances or when optical isolation is required, consider active DACs or optical transceivers with fibre cabling.

## FAQ

### How much does the DAC cable CBO QSFP28-DAC-0.5M 0.5m 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 — 227 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 30.07.2026 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/4466765/59856718_large.webp