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

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-sp-bl--4466763
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-SP-BL
**EAN:** 4063232100814
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-08-01 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-sp-bl--4466763

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QSFP28 DAC Cable is a 0.5m long cable with male QSFP28 connectors on both ends. It is designed for high-speed data transfer in data centers and networking applications. This cable provides a reliable and efficient connection for InfiniBand and fibre optic networks, ensuring optimal performance and minimal latency.

## Long description

The BlueOptics QSFP28 DAC Cable QSFP28-DAC-0.5M-SP-BL is a 0.5 m passive direct-attach twinax cable with male QSFP28 connectors on both ends. Designed for short-reach, high-speed interconnects, this cable supports 100GBase-CR4 electrical signalling and is suitable for linking equipment within racks or across adjacent racks in data centers and networking closets. The cable is offered as a tested, MSA-compliant solution for use with hardware platforms that accept QSFP28 direct-attach copper connections.
Advantages
This 0.5 m QSFP28 DAC provides low latency and low power consumption characteristic of passive twinax solutions, enabling efficient 100 Gbit/s links without active components. Built using MSA-compliant mechanical and electrical specifications, it offers predictable performance and interoperability with major switch, router and storage vendors that support QSFP28 DACs. The short fixed length and robust QSFP28-to-QSFP28 connectors simplify installation in dense rack environments and reduce failure points compared with longer, active cabling alternatives.
Suitable for
High-density rack-to-rack or within-rack 100GbE links
Short-reach connections between switches, routers and storage systems
InfiniBand and Fibre Channel applications up to 100 Gbit/s
Data center top-of-rack (ToR) and adjacent-rack interconnects
Key specifications
Cable type: passive twinax copper direct attach cable
Connector type: QSFP28 male to QSFP28 male
Length: 0.5 meters
Supported data rate: up to 100 Gbit/s (100GBase-CR4 compatible)
Wire gauge: 30 AWG
Compliance: MSA-compliant electrical and mechanical specifications
Typical power consumption: passive (approx. 0.1 W system impact)
How to use
Install the QSFP28 DAC by aligning the QSFP28 connectors with the QSFP28 ports on the two devices and seating each end until the retention latch engages. Use the 0.5 m cable for short-distance links inside racks or between adjacent racks where active optical transceivers are not required. Verify that the connected devices support passive QSFP28 DAC cables and the chosen transmission protocol (Ethernet, Fibre Channel, InfiniBand). Perform link bring-up and check the host system for correct link speed and lane mapping.
Usage recommendations
Use this passive QSFP28 DAC for short, fixed-length connections to minimize latency and power draw. Avoid excessive bending near the connector boots, keep cable runs within the specified 0.5 m length, and ensure compatibility with the target hardware's QSFP28 passive DAC support before deployment.

## 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, Silver |
| Connector 1 | QSFP28 |
| Connector 2 | QSFP28 |
| InfiniBand protocol | Yes |

## FAQ

### How much does the QSFP28 DAC Cable BlueOptics QSFP28-DAC-0.5M-SP-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 30.07.2026 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/4466763/64293582_large.webp