# DAC cable CBO QSFP28-DAC-0.5M 0.5m passive direct attach QSFP28

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-it-bl--4466748
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-IT-BL
**EAN:** 4063232100630
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-07-25 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-it-bl--4466748

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

Passive direct-attach copper cable CBO QSFP28-DAC-0.5M, length 0.5 m, with QSFP28 connectors. Designed for short-reach 100GbE or InfiniBand connections between compatible QSFP28 ports in switches, servers and storage. Provides low-latency, reliable connectivity without transceivers, simplifying installation and reducing power consumption.

## Long description

Passive direct-attach copper cable BlueOptics CBO QSFP28-DAC-0.5M is a 0.5 m twin-axial assembly with QSFP28 connectors, intended for short-reach 100GbE and InfiniBand links. The cable delivers a compact, low-latency physical connection between compatible QSFP28 ports in switches, routers, servers and storage systems without the need for separate optical transceivers. Its passive design reduces power draw and simplifies rack-level cabling while maintaining signal integrity for high-speed data centre interconnects.
Advantages
The passive QSFP28-DAC-0.5M cable provides predictable electrical performance and very low latency due to the direct copper interconnect. Installation is straightforward because the assembly integrates connectors and cable in a single unit, eliminating transceiver handling and compatibility checks. The short length supports neat cable management in dense rack environments and reduces power and cooling requirements compared with active or optical solutions. The cable is suitable for high-density top-of-rack and switch-to-switch connections where link reliability and minimal signal processing are required.
Suitable for
 Short-reach 100 Gigabit Ethernet connections between QSFP28 ports
 InfiniBand HDR/FDR links in compute and storage clusters
 Top-of-rack and switch-to-switch cabling in data centres
 Server-to-switch connections in dense rack deployments
Key specifications
 Connector type: QSFP28 to QSFP28
 Cable type: Passive twin-ax copper direct-attach
 Supported data rates: up to 100 Gb/s per link
 Length: 0.5 m
 Typical applications: 100GbE and InfiniBand short-reach links
 Form factor: Compact assembly for high-density racks
How to use
Ensure both ports on the network devices support QSFP28 direct-attach cables and are configured for the intended data rate. With devices powered down or following hot-plug guidance from the equipment vendor, align the QSFP28 connector keying and insert the cable until the latch engages. Verify the physical link and check interface status on the attached devices; adjust port settings if necessary to match link speed and duplex. For removal, depress the connector latch and withdraw the cable straight out to avoid damaging the port.
Usage recommendations
Use this passive 0.5 m QSFP28 direct-attach cable for reliable short-distance connections inside racks or between adjacent racks. Avoid tight bends near the connector ends and maintain manufacturer-recommended minimum bend radius. Confirm compatibility with equipment vendors for QSFP28 passive assemblies when implementing in mixed-vendor environments.

## FAQ

### How much does the DAC cable CBO QSFP28-DAC-0.5M 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 24.07.2026 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/4466748/59858088_large.webp