# CBO QSFP28 Passive Direct Attach DAC Cable 0.5 m

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-ix-bl--4466749
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-IX-BL
**EAN:** 4063232100647
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-07-29 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-ix-bl--4466749

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

Passive QSFP28 Direct Attach Copper (DAC) cable by CBO, 0.5 m length. Designed for short-reach 100GbE or compatible QSFP28 ports, this fixed copper assembly provides low-latency, energy-efficient connectivity between network switches, servers or storage devices. Ideal for data center top-of-rack links and high-density rack deployments where cost-effective, reliable interconnects are required.

## Long description

The CBO QSFP28 Passive Direct Attach DAC Cable 0.5 m is a fixed copper assembly designed for short-reach 100GbE connections using QSFP28-compatible ports. This 0.5 metre passive DAC provides a direct electrical link between switches, servers and storage devices without active signal conditioning, offering low latency and energy-efficient operation for high-density data centre environments and top-of-rack interconnects.
Advantages
This passive QSFP28 DAC delivers predictable performance with minimal signal processing, reducing power consumption compared with active optics. Its compact, low-profile design supports dense port layouts and simplifies cabling in rack deployments. The fixed 0.5 m length eliminates the need for field termination and reduces potential points of failure, while copper construction provides cost-effective connectivity for short-distance 100GbE links.
Suitable for
Top-of-rack connections between switches and servers in data centres
High-density rack environments with short interconnect distances
Direct server-to-switch or switch-to-switch 100GbE links
Environments where low latency and reduced power consumption are priorities
Key specifications
Interface: QSFP28 to QSFP28 passive copper assembly
Supported link class: 100 Gigabit Ethernet (100GbE)
Length: 0.5 metres
Passive operation: no active signal conditioning or power draw from the cable
Form factor: compact, low-profile QSFP28 connector housings for high-density ports
Usage environment: designed for short-reach intra-rack or adjacent-rack connections
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on the networking equipment until the connector latch engages. Ensure both ends are fully seated and the devices are powered according to their manufacturer instructions. Verify link status on connected devices and configure network interfaces as required for 100GbE operation. For best results, use the cable for short-reach links within racks or between adjacent racks and avoid routing through pathways that may introduce sharp bends or physical strain.
Usage recommendations
Inspect connectors for debris before installation and avoid excessive bending or pulling on the cable. Use this passive DAC for distances up to the specified 0.5 m and verify compatibility with the host devices’ QSFP28 ports and firmware. For longer distances or where active signal conditioning is required, consider optical transceivers or active DAC alternatives.

## FAQ

### How much does the CBO QSFP28 Passive DAC Cable 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 27.07.2026 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/4466749/59858090_large.webp