# DAC cable CBO QSFP28-DAC-0.5M 0.5 m passive direct attach, QSFP28 to QSFP28, 50 cm

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-pt-bl--4466758
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-PT-BL
**EAN:** 4063232100746
**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-pt-bl--4466758

## 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

Passive direct-attach copper (DAC) cable from CBO, model QSFP28-DAC-0.5M, 0.5 m length. Designed for QSFP28 ports, this 50 cm cable provides a short-range, low-latency connection between compatible switches, routers or NICs. Ideal for high-speed 100GbE interconnects within racks or between adjacent racks, offering plug-and-play installation and reduced power compared with active optical modules.

## Long description

The BlueOptics CBO QSFP28-DAC-0.5M is a passive direct-attach copper (DAC) cable with a 0.5 m length, engineered for QSFP28 ports. It provides a straightforward, low-latency electrical connection between compatible 100GbE devices such as switches, routers and network interface cards. As a short-reach interconnect, this 50 cm cable is intended for in-rack or adjacent-rack use where high-throughput and minimal latency are required while avoiding the higher power consumption and cost of active optical transceivers.
Advantages
This passive QSFP28 cable delivers reliable 100GbE connectivity with plug-and-play simplicity and no external power requirements. Its short copper link reduces latency compared with optical alternatives and supports high-density installations by keeping port configurations compact. The cable’s fixed length and integrated QSFP28 connectors simplify replacement and maintenance while offering a cost-effective option for short-distance data center interconnects.
Suitable for
Short-range 100GbE connections within server racks
Interconnects between adjacent racks in data centers
Direct links between QSFP28 ports on switches, routers or NICs
High-throughput, low-latency applications such as east-west traffic
Key specifications
Connector type: QSFP28 to QSFP28
Length: 0.5 m (50 cm)
Cable type: Passive direct-attach copper (DAC)
Supported data rate: 100GbE (QSFP28)
Use case: Short-range, rack-level interconnect
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on your devices until the latch engages, ensuring a secure mechanical connection. No driver installation or external power is required; devices will negotiate link parameters automatically when supported. Use the cable for short runs within racks or between adjacent racks and verify link status via the device interface to confirm proper operation.
Usage recommendations
For reliable performance, avoid tight bends and excessive pulling on the cable. Keep the cable within recommended bend radius and ensure connectors are free of debris before insertion. Use this passive DAC for short-distance interconnects; for longer runs or fiber-based infrastructure, consider optical transceivers and fiber cabling.

## 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 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/4466758/59859840_large.webp