# QSFP28 DAC Cable BlueOptics QSFP28-DAC-0.5M-PS-BL 0.5m Male/Male

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-ps-bl--4466757
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-PS-BL
**EAN:** 4063232100753
**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-ps-bl--4466757

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.07.2026 | free |
| Pickup points | 03.08.2026 | 1.89 EUR |
| Courier delivery to door | 03.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QSFP28 DAC Cable is a 0.5m long cable with QSFP28 Male connectors on both ends. It is designed for high-speed data transfer in data centers and networking applications, ensuring reliable connectivity and performance.

## Long description

The BlueOptics QSFP28 DAC Cable QSFP28-DAC-0.5M-PS-BL is a 0.5 metre passive direct attach twinax copper cable with QSFP28 male connectors on both ends. Designed for short-reach, high-speed links, it supports 100GBase-CR4 electrical transport and is intended for rack-to-rack or within-rack connections in data centres and network environments. The cable conforms to QSFP28 MSA electrical and mechanical interface definitions and is intended for use with hardware platforms that support QSFP28 passive DACs.
Advantages
The cable offers a low-latency, low-power passive connection for 100 Gbps links, eliminating the need for transceivers for short-distance connections. Its twinax copper construction and QSFP28 connectors provide a reliable, mechanically compatible interface for switches, routers and storage systems. Built to MSA-aligned specifications, the cable is compatible with typical 100GBase-CR4 use cases and is suitable for environments that prioritise cost-effectiveness and simple installation.
Suitable for
Short-reach 100 Gbps connections within and between adjacent racks
High-density switch-to-switch or switch-to-storage links in data centres
Environments where low latency and low power consumption are required
Key specifications
Length: 0.5 metre
Connector type: QSFP28 male to QSFP28 male
Media: passive twinax copper (30 AWG)
Data rate support: up to 100 Gbps (100GBase-CR4 electrical transport)
Compliance: QSFP28 MSA electrical/mechanical interface alignment
How to use
Install the cable by inserting each QSFP28 connector into the corresponding QSFP28 port until the latch engages. Ensure both devices support passive QSFP28 DACs and the 100GBase-CR4 electrical protocol. Route the cable to avoid sharp bends and mechanical strain; maintain recommended bend radius for twinax copper cabling. No additional power or transceiver modules are required for passive operation. Verify link status and speed on connected equipment after insertion.
Usage recommendations
Use this 0.5 m passive QSFP28 DAC for short-distance interconnections inside racks or between adjacent racks. Confirm hardware compatibility with passive DACs and 100GBase-CR4 before deployment, and handle connectors carefully to avoid contamination and bent pins.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.15 kg |
| Package weight | 160 g |
| Cable length | 0.5 m |
| Data transfer rate | 100 Gbit/s |
| Product colour | Black |
| Connector 1 | QSFP28 |
| Connector 2 | QSFP28 |
| InfiniBand protocol | Yes |

## FAQ

### How much does the QSFP28 DAC Cable BlueOptics QSFP28-DAC-0.5M-PS-BL 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 — 227 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 29.07.2026 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/4466757/64293567_large.webp