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

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-mt-bl--4466752
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-MT-BL
**EAN:** 4063232100692
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-07-30 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-mt-bl--4466752

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.07.2026 | free |
| Pickup points | 03.08.2026 | 1.89 EUR |
| Courier delivery to door | 03.08.2026 | 4.99 EUR |

## Summary description

Passive copper DAC cable CBO QSFP28-DAC-0.5M is a 0.5 m direct-attach cable with QSFP28 connectors for short-reach 100GbE interconnections. Designed for rack-to-rack or within-rack links, it provides low-latency, low-power connectivity without transceivers. Ideal for data centers and network equipment requiring compact, cost-effective 100Gbps links.

## Long description

Passive copper DAC cable CBO QSFP28-DAC-0.5M is a 0.5 m direct-attach cable with QSFP28 connectors designed for short-reach 100GbE interconnections. The cable provides a fixed, low-latency link between QSFP28 ports without the need for separate optical transceivers, making it suitable for dense rack-to-rack or within-rack topologies in data centers and high-performance networking equipment.
Advantages
The passive QSFP28 direct-attach cable offers low power consumption since no active transceiver electronics are required, and it delivers minimal latency for latency-sensitive applications. Its robust copper construction ensures reliable electrical performance over short distances, and the integrated QSFP28 connectors simplify installation and reduce component count in network racks. The short 0.5 m length minimizes signal attenuation and cross-talk in dense deployments.
Suitable for
 Short-reach 100GbE links between switches and routers within a rack
 Top-of-rack to aggregation switch connections in data centers
 High-performance computing clusters requiring low-latency interconnects
 Cable management scenarios where compact, fixed-length connections are preferred
Key specifications
 Connector type: QSFP28 on both ends
 Length: 0.5 m
 Media: passive copper direct-attach
 Supported link rate: 100 Gigabit Ethernet
 Latency: minimal electrical latency suitable for short-reach links
 Power: no additional power required for transceivers
 Form factor: compact, low-profile QSFP28 assembly
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on your network devices until the latch engages. Ensure both ports support passive DAC connections and the devices are configured for 100GbE operation. Route the 0.5 m cable to avoid sharp bends and maintain proper airflow in the rack. No additional configuration is required at the physical layer beyond verifying link settings on the connected equipment.
Usage recommendations
Use this passive DAC cable for short, fixed-length connections where cost, low power and low latency are primary concerns. Avoid using passive copper DACs for longer runs; for distances beyond the specified short-reach range, consider active copper or optical solutions. Follow equipment vendor compatibility lists and handle connectors by the housing to prevent damage to mating surfaces.

## FAQ

### How much does the DAC cable CBO QSFP28-DAC-0.5M QSFP28 0.5 m 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 29.07.2026 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/4466752/59852007_large.webp