# DAC cable CBO QSFP28 SC282801L0.5M30 0.5 m — direct attach copper for QSFP28

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-qn-bl--4466760
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-QN-BL
**EAN:** 4063232100777
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-08-05 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-qn-bl--4466760

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.89 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

CBO DAC cable QSFP28 SC282801L0.5M30 is a 0.5 m direct attach copper (DAC) assembly designed for QSFP28 ports. It provides a short-range, low-latency connection between compatible QSFP28 network devices without optical transceivers. Intended for high-speed links in data centers, switches and servers where a reliable, cost-effective copper interconnect is needed.

## Long description

CBO DAC cable QSFP28 SC282801L0.5M30 is a 0.5 m direct attach copper (DAC) assembly engineered for QSFP28 ports. This short, passive copper cable creates a direct electrical connection between compatible QSFP28 network devices, offering a cost-effective alternative to optical transceivers for short-reach, high-bandwidth links in data centers, switches and servers. The cable is designed to deliver low latency and stable throughput for 100 Gigabit Ethernet applications where a reliable copper interconnect is preferred.
Advantages
The DAC cable provides a low-latency, low-power connection without the need for separate optical modules, reducing hardware complexity and operational costs. Its fixed 0.5 m length minimizes signal degradation and cross-talk in short-reach links while simplifying cable management in dense rack environments. Passive construction ensures plug-and-play compatibility with QSFP28 ports that support direct attach copper assemblies, enabling immediate deployment for high-speed interconnects.
Suitable for
 Short-range 100 Gigabit Ethernet links between switches and routers
 Direct server-to-switch connections in top-of-rack and middle-of-row deployments
 High-density patching in data center topologies where short fixed-length cables are preferred
 Environments that require low-latency and low-power interconnects without optical transceivers
Key specifications
 Connector type: QSFP28 to QSFP28 direct attach
 Cable type: Direct attach copper (passive)
 Length: 0.5 m
 Data rate: Supports 100 Gigabit Ethernet signaling for QSFP28 ports
 Latency: Low electrical latency suitable for short-reach high-bandwidth links
 Form factor: Compact assembly for high-density rack installations
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on the devices to be connected, ensuring the latch engages securely. Verify that the host devices support direct attach copper assemblies; some systems may require firmware or port configuration to recognize passive DACs. Once connected, monitor link status indicators on the equipment to confirm successful negotiation at the intended data rate. Remove the cable by pressing the latch and pulling straight out to avoid damage to the connector or port.
Usage recommendations
Use the 0.5 m DAC cable for short, stable connections inside racks or between adjacent rack units. Avoid tight bends and excessive pulling force; maintain the cable within manufacturer-recommended bend radius and handle connectors by the housing. For deployments where longer reach or optical isolation is needed, consider optical transceivers and fiber cabling instead of direct attach copper.

## FAQ

### How much does the DAC cable CBO 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 — 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 03.08.2026 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/4466760/59859842_large.webp