# BlueOptics QSFP-H40G-CU3M-BL InfiniBand/fibre optic cable 3 m Male/Male

**URL:** https://aio.lv/en/product--blueoptics-qsfp-h40g-cu3m-bl--5038456
**Data updated:** 2026-03-07 15:11 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP-H40G-CU3M-BL
**EAN:** 4063232636818
**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-qsfp-h40g-cu3m-bl--5038456

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 11.08.2026 | free |
| Pickup points | 14.08.2026 | 1.89 EUR |
| Courier delivery to door | 14.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QSFP-H40G-CU3M-BL is a 3 m InfiniBand/fibre optic cable featuring male QSFP connectors on both ends. It is designed for high-speed data transfer, ensuring reliable connectivity for data centers and networking applications. The cable's robust construction and quality materials provide durability and performance, making it an ideal choice for demanding environments.

## Long description

The BlueOptics QSFP-H40G-CU3M-BL is a 3 m high-speed direct attach cable (DAC) with QSFP male connectors on both ends. Designed for short-reach connections in racks and between adjacent racks, this 40GBase-CR4-compatible twinax cable supports Ethernet, FCoE, Fibre Channel and InfiniBand data transport at up to 40 Gbit/s over a 3 metre distance. The cable uses 30 AWG twinax conductors and an MSA-compliant QSFP-to-QSFP interface to ensure mechanical compatibility with hardware platforms that accept QSFP 40G DACs.
Advantages
This passive twinax cable provides low latency and low power consumption, and its passive design requires no active electronics in the cable itself. The robust construction and use of quality components deliver reliable electrical performance for short-distance links and contribute to extended service life in demanding data center environments. The cable is compatible with a wide range of switches, routers and storage systems that support 40G QSFP direct attach cables.
Suitable for
Interconnects inside server racks and between adjacent racks
High-speed uplinks between switches and aggregation devices
Storage array connections and SAN uplinks using Fibre Channel or FCoE
Low-latency InfiniBand links and compute cluster cabling
Key specifications
Length: 3 metres
Connector type: QSFP male to QSFP male
Data rate support: up to 40 Gbit/s (40GBase-CR4)
Cable type: passive twinax copper (30 AWG)
Transmission media: electrical direct attach for short-range links
Standard compliance: MSA-compliant QSFP form factor
How to use
Install the cable by inserting each QSFP connector into the corresponding QSFP ports on your networking devices until the connector latches. Ensure both devices support passive 40G DAC twinax connections and that firmware or platform compatibility is met. Route the cable within racks or between adjacent racks to avoid sharp bends and excessive strain; maintain the manufacturer’s minimum bend radius. No additional power or configuration is required on the cable itself—link negotiation and protocol handling occur on the connected devices.
Usage recommendations
For optimal performance, use this 3 m passive QSFP twinax cable for short-reach connections only. Verify device compatibility and firmware support before deployment, keep cable runs within recommended distances, and avoid tight bends or mechanical stress to preserve signal integrity and service life.

## 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 cable BlueOptics QSFP-H40G-CU3M-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 11.08.2026 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/5038456/64336473_large.webp