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

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-rw-bl--4466761
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-RW-BL
**EAN:** 4063232100784
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 104.49 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 86.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-rw-bl--4466761

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

CBO QSFP28-DAC-0.5M is a 0.5 m passive copper DAC cable with QSFP28 interfaces, designed for short-range high-speed server, switch and storage interconnects. The direct-attach cable delivers low-latency, cost-effective 100Gbps connectivity between compatible QSFP28 ports, simplifying rack-level connections and reducing power compared with active optics.

## Long description

The BlueOptics CBO QSFP28-DAC-0.5M is a 0.5 m passive copper direct-attach cable with QSFP28 interfaces, engineered for short-range 100Gbps server, switch and storage interconnects. The cable enables rack-level connections between compatible QSFP28 ports without the need for transceivers, providing a compact, low-latency alternative to optical links. Its passive design consumes no additional power for signal conversion and supports standard 100 Gigabit Ethernet links over a short 0.5 metre distance.
Advantages
This passive QSFP28 DAC cable provides cost-effective 100Gbps connectivity with minimal latency and low power consumption compared with active optics. The fixed 0.5 m length allows neat rackside routing and reduced signal attenuation for close-proximity ports. Compatibility with QSFP28 ports simplifies installation and avoids separate transceivers, reducing component count and maintenance points.
Suitable for
Top-of-rack and adjacent-rack interconnections in data centers
High-speed links between servers and switches supporting QSFP28
Short-range storage array connections and fabric links
Low-latency cluster and compute node interconnects
Key specifications
Connector type: QSFP28 to QSFP28 passive copper
Length: 0.5 metre
Data rate: Designed for 100 Gbps links
Cable type: Direct-attach copper (passive)
Typical use: Short-reach, rack-level interconnects
Latency: Low, suitable for latency-sensitive applications
How to use
Install the cable by plugging each QSFP28 end into the corresponding QSFP28 port on your compatible network device. Ensure devices are powered off or meet hot-plug guidelines from the device manufacturer before insertion if required. Verify link status after connection through the host or switch management interface and observe standard diagnostics to confirm 100Gbps link establishment. The cable requires no additional adapters or transceivers.
Usage recommendations
Use the 0.5 m passive QSFP28 DAC for short-distance connections within the same rack or adjacent racks where 100Gbps throughput and low latency are required. Avoid exceeding the specified mechanical bend radius and protect the connectors from contamination to maintain link quality. For longer runs or where optical isolation is required, consider optical transceivers and fiber cables instead.

## FAQ

### How much does the CBO QSFP28-DAC-0.5M QSFP28 DAC cable 0.5 m cost, and is it available for purchase?

The price is 104.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 224 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 10.08.2026 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/4466761/59859843_large.webp