# CBO QSFP28 Direct Attach DAC Cable 0.5m, passive QSFP28-DAC-0.5M

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-ma-bl--4466751
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-MA-BL
**EAN:** 4063232100685
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-07-30 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-ma-bl--4466751

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

Passive CBO QSFP28 Direct Attach Cable (DAC) 0.5 m for high-speed server, switch and storage interconnects. Designed for short-reach 100Gbps QSFP28 ports, this 0.5-metre copper assembly provides low-latency, power-efficient point-to-point connections without transceivers. Suitable for data center racks and top-of-rack switching to simplify cabling and reduce cost.

## Long description

The CBO QSFP28 Direct Attach DAC Cable 0.5m is a passive copper assembly designed for short-reach 100Gbps interconnections between QSFP28 ports. Intended for use in data centre racks, top-of-rack switches and high-density server or storage environments, this 0.5-metre cable enables direct point-to-point connectivity without the need for optical transceivers. The cable supports the QSFP28 form factor and is optimized for low latency and low power consumption in dense networking deployments.
Advantages
This passive DAC cable offers a compact, cost-efficient alternative to optical modules for short-distance links, reducing both initial hardware expense and ongoing power draw. Its fixed-length copper construction simplifies rack cabling and helps maintain predictable signal integrity across 0.5 metres. The QSFP28 form factor ensures compatibility with standard 100Gbps ports that accept direct-attach assemblies, while the passive design eliminates the need for additional cooling associated with active transceivers.
Suitable for
Short-reach 100Gbps links between servers and switches
Top-of-rack and middle-of-row switch interconnects in data centres
High-density server and storage cluster interconnections
Environments where low latency and low power consumption are required
Key specifications
Connector type: QSFP28 to QSFP28 passive direct attach
Length: 0.5 m
Supported throughput: 100 Gbps
Cable medium: copper
Design: passive (no active electronics or optical transceivers)
Typical use: short-reach, point-to-point connections in racks
How to use
Insert each QSFP28 connector into the corresponding 100Gbps port on the devices to be linked, ensuring secure latching and alignment of the connector. Verify the ports support passive direct-attach copper assemblies and that device firmware or switch settings are configured for 100Gbps operation. After connection, monitor link status through the device management interface and confirm expected throughput and error rates. For best results, avoid sharp bends near the connector and maintain appropriate cable routing within the rack to prevent strain.
Usage recommendations
Use this 0.5-m passive DAC cable where short, cost-effective 100Gbps links are required. Confirm compatibility with your switch or server vendor documentation before deployment, and follow data centre cabling best practices such as proper labeling, strain relief, and maintaining clearance from heat sources.

## FAQ

### How much does the CBO QSFP28 DAC Cable 0.5m 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 28.07.2026 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/4466751/59859838_large.webp