# InfiniBand/fibre optic cable BlueOptics 40GBASE-CR4-PQSFPXA3MBU-BL 3 m QSFP Male/Male

**URL:** https://aio.lv/en/product--blueoptics-40gbase-cr4-pqsfpxa3mbu-bl--5041271
**Data updated:** 2026-02-07 21:02 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** 40GBASE-CR4- PQSFPXA3MBU-BL
**EAN:** 4063232256498
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 114.99 €
**Prices and availability valid until:** 2026-08-12 23:59
**Price without VAT (21%):** 95.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-40gbase-cr4-pqsfpxa3mbu-bl--5041271

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics 40GBASE-CR4-PQSFPXA3MBU-BL is a 3 m InfiniBand/fibre optic cable with QSFP connectors. It features male/male connectors, designed for high-speed data transmission in data centers and networking environments. This cable ensures reliable performance and efficient connectivity for 40GBASE applications.

## Long description

The BlueOptics 40GBASE-CR4-PQSFPXA3MBU-BL is a 3 meter passive Direct Attach Copper (twinax) cable with QSFP-to-QSFP male connectors, designed for 40GBase-CR4 links in racks and between adjacent racks. It carries electrical signals over short distances and supports Ethernet, FCoE, Fibre Channel and InfiniBand applications at speeds up to 40 Gbps when used with compatible hardware that accepts QSFP passive DAC twinax cables.
Advantages
This 3 m passive QSFP-to-QSFP twinax cable provides low power consumption and low latency for short-range high-speed interconnects. It follows MSA-compliant specifications and is built from industry-grade components to ensure stable electrical performance. The passive design reduces complexity and failure points compared with active solutions, and its form factor enables straightforward rack-to-rack or in-rack connections.
Suitable for
High-speed links between switches and routers in data center racks
Interconnects between adjacent racks and top-of-rack equipment
Storage system connections supporting 40G traffic
Environments using Ethernet, FCoE, Fibre Channel or InfiniBand at up to 40 Gbps
Key specifications
Length: 3 meters
Connector type: QSFP (male) to QSFP (male)
Cable type: Passive twinax copper (Direct Attach Cable)
Maximum data rate: up to 40 Gbps
Wire gauge: 30 AWG
MSA-compliant QSFP form factor
Typical power consumption: passive design (approx. 0.1 W per link)
How to use
Insert each QSFP male connector into the QSFP ports of the two compatible devices until the connector latches. Ensure both devices officially support passive QSFP twinax DACs and the 40GBase-CR4 electrical protocol. Verify link status and configuration on the connected hardware; if necessary, adjust port settings to enable 40G operation. Handle the cable by the connector housings and avoid sharp bends to preserve signal integrity.
Usage recommendations
Use this cable for short-range, high-bandwidth connections within racks or between neighboring racks. Confirm device compatibility with passive QSFP twinax cables before deployment and avoid exceeding recommended bend radius or placing the cable near strong electromagnetic interference sources.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.25 kg |
| Package weight | 260 g |
| Cable length | 3 m |
| Data transfer rate | 40 Gbit/s |
| Product colour | Black, Silver |
| Connector 1 | QSFP |
| Connector 2 | QSFP |
| InfiniBand protocol | Yes |

## FAQ

### How much does the InfiniBand/fibre optic cable BlueOptics 40GBASE-CR4-PQSFPXA3MBU-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 10.08.2026 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/5041271/64351074_large.webp