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

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-ql-bl--4466759
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-QL-BL
**EAN:** 4063232100760
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 93.49 €
**Prices and availability valid until:** 2026-07-31 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-ql-bl--4466759

## 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

Passive copper direct attach cable (DAC) CBO QSFP28-DAC-0.5M, 0.5 m length, with QSFP28 connectors at both ends. Designed for short-range 100Gbps connections between switches, routers or network adapters supporting QSFP28 ports. Provides low-latency, power-efficient link for data center top-of-rack cabling and server-to-switch links.

## Long description

BlueOptics DAC cable CBO QSFP28-DAC-0.5M is a 0.5 m passive copper direct attach cable with QSFP28 connectors on both ends. It is engineered for short-range 100 Gbps links and is suitable for direct connections between switches, routers and network adapters that provide QSFP28 ports. The cable offers a compact, low-power alternative to optical transceivers for top-of-rack and server-to-switch interconnects in data center environments.
Advantages
The passive copper construction delivers low latency and minimal power consumption compared with active optical modules, while the short 0.5 m length ensures minimal signal attenuation for reliable 100 Gbps transmission. Built with QSFP28 interfaces on both ends, the cable supports straightforward hot-plug installation and maintains electrical compatibility with standard QSFP28 ports. Its fixed-length form factor reduces inventory complexity and simplifies cabling in dense rack deployments.
Suitable for
 Short-range 100 Gbps links between switches in the same rack
 Server-to-switch connections in data center top-of-rack configurations
 High-density patching where low latency and low power are required
 Temporary or permanent direct attach links in lab and test environments
Key specifications
 Connector type: QSFP28 to QSFP28
 Length: 0.5 m
 Transmission: 100 Gbps passive copper DAC
 Latency: low-latency electrical interconnect
 Power: passive design with minimal power draw compared to active modules
 Usage environment: short-range, within-rack and adjacent-rack connections
How to use
Ensure both devices have compatible QSFP28 ports and proper link configuration before installation. With power to the connected devices turned on or off according to your site procedures, align the QSFP28 connector latches with the port and insert the cable straight into the port until the latch engages. Verify link status through the switch or adapter management interface and confirm 100 Gbps operation. For removal, depress the connector latch and withdraw the cable in a straight motion to avoid damaging the port.
Usage recommendations
Use this 0.5 m passive QSFP28 DAC for within-rack or adjacent-rack connections where 100 Gbps bandwidth, low latency and low power consumption are priorities. Avoid exceeding the intended short-reach use and route the cable to prevent sharp bends or mechanical strain on the QSFP28 connectors.

## FAQ

### How much does the CBO QSFP28-DAC-0.5M 0.5m QSFP28 DAC cable 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 — 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/4466759/59859841_large.webp