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

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-bc-bl--4466736
**Data updated:** 2026-02-24 11:00 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-BC-BL
**EAN:** 4063232100456
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-08-02 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-bc-bl--4466736

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 31.07.2026 | free |
| Pickup points | 05.08.2026 | 1.89 EUR |
| Courier delivery to door | 05.08.2026 | 4.99 EUR |

## Summary description

Passive DAC cable CBO QSFP28-DAC-0.5M, 0.5 meter length, with QSFP28 connectors for direct-attach copper connections. Designed for short-reach interconnects between QSFP28 ports, it supports high-speed server, switch and storage links with low latency and reduced power compared to optical transceivers. Suitable for data centers and rack-to-rack connections where a short, cost-effective copper link is required.

## Long description

Passive DAC cable CBO QSFP28-DAC-0.5M is a 0.5 meter direct-attach copper cable with QSFP28 connectors designed for short-reach interconnects. The cable provides a low-latency, low-power connection between QSFP28 ports on switches, servers and storage systems. Its short length and passive construction make it a cost-effective alternative to optical transceivers for rack-to-rack and in-rack connections in data center environments.
Advantages
This passive QSFP28 direct-attach copper cable offers predictable signal integrity at high data rates while eliminating the need for transceivers and fiber optics in short-distance links. The fixed 0.5 m length reduces clutter and simplifies cable management in dense racks. The passive design consumes no additional power for signal amplification, and QSFP28 connectors ensure compatibility with equipment using the QSFP28 form factor.
Suitable for
Short-reach interconnects between QSFP28 ports in data centers
Rack-to-rack and in-rack connections where 0.5 m reach is sufficient
High-speed links between switches, servers and storage appliances
Environments that require low-latency and reduced power consumption
Key specifications
Cable type: passive direct-attach copper (DAC)
Connector type: QSFP28 on both ends
Length: 0.5 meter
Data rate: supports 100Gbps aggregate rates over QSFP28 interfaces
Form factor: QSFP28 compatible
Typical use: short-reach server, switch and storage interconnects
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port until the latch engages. Ensure ports on both devices are powered down or that hot-plug procedures recommended by the equipment vendor are followed during installation if required. After seating the connectors, verify link status through the host devices or management interface. For removal, release the connector latch and pull the cable straight out to avoid damaging the port.
Usage recommendations
Use this 0.5 m passive QSFP28 DAC for short, direct links inside racks or between adjacent racks. Avoid routing the cable near sources of strong electromagnetic interference, and do not exceed the recommended bend radius. Verify device compatibility with QSFP28 passive DACs and consult hardware documentation for supported link settings.

## FAQ

### How much does the CBO QSFP28-DAC-0.5M 0.5 m passive 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 — 226 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 31.07.2026 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/4466736/59858081_large.webp