# InfiniBand/fibre optic cable BlueOptics CBL-NTWK-0942-MQ28C05M-BL 0.5 m QSFP28 Male/Male

**URL:** https://aio.lv/en/product--blueoptics-cbl-ntwk-0942-mq28c05m-bl--5039230
**Data updated:** 2026-03-07 15:12 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** CBL-NTWK-0942-MQ28C05M-BL
**EAN:** 4063232257488
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-08-23 23:59
**Price without VAT (21%):** 87.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-cbl-ntwk-0942-mq28c05m-bl--5039230

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.08.2026 | free |
| Pickup points | 27.08.2026 | 1.79 EUR |
| Courier delivery to door | 27.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics CBL-NTWK-0942-MQ28C05M-BL is a 0.5 m InfiniBand/fibre optic cable featuring QSFP28 connectors. It provides high-speed data transmission and is ideal for connecting network devices in data centers.

## Long description

The BlueOptics CBL-NTWK-0942-MQ28C05M-BL is a 0.5 m InfiniBand / fibre optic cable with QSFP28 male-to-male connectors designed for short-reach, high-speed links in data center racks. It supports 100G data rates over a 0.5 meter direct attach connection and is suitable for electrical twinax (DAC) interconnects where QSFP28 ports are available on switches, servers and storage systems. The compact length and QSFP28 interface make the cable appropriate for connecting adjacent devices in top-of-rack and within-rack installations.
Advantages
This cable delivers 100GBase-CR4 performance in a passive direct-attach format, offering low latency, low power consumption and a simple mechanical connection with QSFP28 male ends. It complies with common MSA electrical specifications for QSFP28 twinax assemblies and is constructed from high-quality components intended for reliable signal transmission over short distances. The short 0.5 m length reduces clutter and signal attenuation in rack environments while providing compatibility with major hardware platforms that support QSFP28 direct attach cables.
Suitable for
Connecting QSFP28 ports between adjacent switches or between switch and server within a rack
High-speed InfiniBand or Ethernet 100G links in data center top-of-rack deployments
Direct attach connections for storage systems, routers, and network appliances that accept passive QSFP28 twinax
Key specifications
Connector type: QSFP28 male to QSFP28 male
Length: 0.5 meter
Data rate: up to 100 Gbit/s (100GBase-CR4 / compatible InfiniBand / FCoE / Fibre Channel where supported)
Cable type: passive twinax (direct attach copper for short-reach electrical signaling)
Wire gauge: 30 AWG
Form factor: direct attach cable (DAC) for within-rack/adjacent-rack links
How to use
Ensure both devices have QSFP28 ports that support passive direct attach twinax connections and that the host hardware and firmware accept third-party DACs. Before installation, power down or follow hot-plug procedures recommended by your equipment vendor. Insert each QSFP28 connector firmly into the corresponding port until it latches. Verify link status in device management interfaces and monitor for correct link speed and lane negotiation. For removal, release the latch mechanism and gently withdraw the connector.
Usage recommendations
Use the cable for short, high-speed links only; avoid routing it near sources of mechanical stress, excessive heat, or sharp bends. Verify compatibility with your switch or server vendor documentation for passive DAC support and test the link after installation to confirm expected 100G operation.

## 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 InfiniBand/fibre optic cable BlueOptics CBL-NTWK-0942-MQ28C05M-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 — 224 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 24.08.2026 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/5039230/64340301_large.webp