# BlueOptics AT-QSFP3CU-BL InfiniBand fibre optic cable 3 m QSFP Black

**URL:** https://aio.lv/en/product--blueoptics-at-qsfp3cu-bl--4465084
**Data updated:** 2026-02-25 16:30 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** AT-QSFP3CU-BL
**EAN:** 4063232636757
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 114.99 €
**Prices and availability valid until:** 2026-08-02 23:59
**Price without VAT (21%):** 95.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-at-qsfp3cu-bl--4465084

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.89 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics AT-QSFP3CU-BL is a 3 m InfiniBand fibre optic cable with QSFP connectors. It features male/male connectors for high-speed data transmission, making it ideal for data centers and networking applications.

## Long description

The BlueOptics AT-QSFP3CU-BL InfiniBand fibre optic cable is a 3 m QSFP-to-QSFP direct attach solution designed for short-distance, high-speed links in racks and adjacent rack pairs. This passive 40GBase-CR4 twinax copper-style cable delivers up to 40 Gbit/s per link and features male QSFP connectors in a black housing. It is suitable for use with switches, routers, storage systems and other hardware platforms that support QSFP 40G direct attach connections.
Advantages
This cable provides a cost-effective, low-latency direct attach connection for short-range interconnects without active electronics, consuming minimal power. Built to MSA-compliant specifications and assembled using high-quality components, the cable offers reliable data transmission for Ethernet, FCoE, Fibre Channel and InfiniBand protocols up to 40 Gbit/s on a 3 m span. The design aims for long service life and broad compatibility with major networking hardware that supports QSFP passive DAC links.
Suitable for
 Short-distance 40 Gbit/s links between switches and routers in racks
 Storage system interconnects and SAN fabric connections
 Server-to-switch or switch-to-switch connections in data centers
 InfiniBand, Ethernet, FCoE or Fibre Channel high-speed links within 3 m
Key specifications
 Connector type: QSFP to QSFP, male/male
 Length: 3 meters
 Data rate support: up to 40 Gbit/s
 Cable type: passive direct attach (twinax-style) for short-range electrical signaling
 Wire gauge: 30 AWG (as used in comparable DAC assemblies)
 Power consumption: passive design with minimal additional power draw
 Standards: MSA-compliant QSFP 40GBase-CR4 form factor and electrical characteristics
How to use
Ensure both endpoints support passive QSFP 40G direct attach cables before installation. Power down or follow hot-plug guidelines for the specific hardware if required by the vendor. Align and insert each QSFP connector fully into the corresponding port until it latches; verify link status on your devices and confirm speed and protocol settings (Ethernet, FCoE, Fibre Channel or InfiniBand) in the network equipment management interface. For removal, release the connector latch and withdraw straight out to avoid damaging the port.
Usage recommendations
Use this passive QSFP direct attach cable for short, fixed connections inside racks or between adjacent racks where 3 m length and 40G performance are suitable. Avoid routing the cable near high-heat sources, sharp bends, or areas with heavy mechanical stress. Verify vendor compatibility lists when deploying in certified hardware platforms and consider a test sample in your environment to confirm full interoperability.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.25 kg |
| Package weight | 260 g |
| Cable length | 3 m |
| Data transfer rate | 40 Gbit/s |
| Product colour | Black |
| Connector 1 | QSFP |
| Connector 2 | QSFP |
| Warranty period | 5 year(s) |
| Compliance certificates | RoHS |
| InfiniBand protocol | Yes |

## FAQ

### How much does the InfiniBand cable BlueOptics AT-QSFP3CU-BL cost, and is it available for purchase?

The price is 114.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 152 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 03.08.2026 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/4465084/64290305_large.webp