# InfiniBand cable CBO 49Y7891-BL 3 m QSFP black

**URL:** https://aio.lv/en/product--blueoptics-49y7891-bl--4465017
**Data updated:** 2026-02-25 16:30 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** 49Y7891-BL
**EAN:** 4063232636986
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 114.99 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 95.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-49y7891-bl--4465017

## 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

Passive InfiniBand cable from CBO, model 49Y7891-BL, with a 3 m length and QSFP connectors in black. Designed for high-speed interconnects between compatible network devices, storage arrays and switches. Provides a fixed-length copper link for low-latency data transfer in data centers and HPC environments. Suitable for direct device-to-device connections where QSFP ports are supported.

## Long description

Passive InfiniBand cable CBO 49Y7891-BL 3 m QSFP black is a fixed-length copper interconnect designed for short-reach, high-throughput links between compatible QSFP ports. With a 3 m length and QSFP terminations, this cable supports low-latency data transfer for server-to-switch, switch-to-switch or switch-to-storage connections in data centers and high-performance computing (HPC) environments. The black outer jacket provides standard mechanical protection while keeping the physical profile compact for dense rack installations.
Advantages
This passive InfiniBand cable offers reliable signal integrity for short-distance links without requiring additional power or active signal conditioning. The QSFP connectors deliver a standardized physical interface for broad compatibility with equipment that supports QSFP form-factor ports. Its fixed 3 m length simplifies planning in rack layouts and reduces uncertainty about cable slack. The cable’s copper construction enables low latency and consistent throughput suitable for latency-sensitive applications.
Suitable for
Direct connections between QSFP-enabled switches and routers
Server-to-switch links in data center racks
Interconnects for storage arrays and fabric-attached storage systems
Short-reach links in high-performance computing clusters
Key specifications
Connector type: QSFP on both ends
Cable length: 3 m fixed length
Media: passive copper assembly
Color: black outer jacket
Application: short-reach, high-speed interconnects for InfiniBand/QSFP environments
Latency: optimized for low-latency device-to-device links
How to use
Install the cable by inserting each QSFP connector into the corresponding QSFP port on the network devices, ensuring the latch engages securely. Route the cable within the rack to avoid tight bends and mechanical stress; maintain the manufacturer’s recommended minimum bend radius for copper assemblies. For best performance, connect directly between QSFP ports and avoid using adapters or unapproved breakout modules. Verify link status and negotiated speed via device management interfaces after connection.
Usage recommendations
Use this passive QSFP copper cable for short, fixed-length links where low latency and predictable performance are required. Avoid deploying it for distances beyond 3 m or in environments where electromagnetic interference is significant; in those cases consider shielded routing or alternative active or optical solutions.

## FAQ

### How much does the InfiniBand cable CBO 49Y7891-BL 3 m 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

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