# InfiniBand/fibre optic cable BlueOptics 498385-B21-BL 1 m QSFP Male/Male

**URL:** https://aio.lv/en/product--blueoptics-498385-b21-bl--5037968
**Data updated:** 2026-03-07 15:11 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** 498385-B21-BL
**EAN:** 4063232011974
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 114.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 95.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-498385-b21-bl--5037968

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The BlueOptics 498385-B21-BL is a 1 m InfiniBand/fibre optic cable featuring QSFP connectors on both ends. It is designed for high-speed data transmission in data centers and networking applications, ensuring reliable connectivity.

## Long description

The BlueOptics 498385-B21-BL is a 1 m InfiniBand/fibre optic direct attach cable with QSFP male connectors on both ends. Designed for short-reach, high-speed links in data centers and rack environments, this cable supports 40GBase-CR4 electrical transmission and is appropriate for Ethernet, FCoE, Fibre Channel and InfiniBand applications up to 40 Gbps over a 1 metre distance. The product follows MSA-compliant design and is built with quality components to ensure reliable connectivity between switches, routers, storage systems and other compatible hardware.
Advantages
This 1 m QSFP-to-QSFP cable provides a low-latency, low-power direct attach solution for short interconnects where active transceivers are not required. As a passive twinax direct attach cable, it reduces system power consumption and simplifies installation by offering plug-and-play connectivity. The construction uses industry-standard components and manufacturing practices to deliver consistent performance, long service life and compatibility with platforms that support 40GBase-CR4 DACs.
Suitable for
 Short-distance high-speed rack-to-rack and intra-rack connections
 Switch-to-switch, switch-to-server and switch-to-storage links
 Data center top-of-rack and aggregation layer interconnects
 Environments using Ethernet, FCoE, Fibre Channel or InfiniBand at 40 Gbps
Key specifications
 Connector type: QSFP male to QSFP male
 Length: 1 metre
 Data rate support: up to 40 Gbps per cable (40GBase-CR4)
 Cable type: passive twinax copper direct attach
 Wire gauge: 30 AWG
 Standards: MSA-compliant design for QSFP DAC applications
 Typical use: short-reach rack and adjacent-rack interconnects
How to use
Ensure both endpoints support passive QSFP direct attach cables and the 40GBase-CR4 transmission protocol. With network equipment powered off or in a safe maintenance state, align each QSFP connector with the corresponding port and insert until the latch engages. After installation, power on the devices and verify link status and negotiated speed in the management interface or LED indicators. For removal, disengage the latch and pull the connector straight out to avoid stress on the port or cable.
Usage recommendations
Use this cable for short-distance connections within racks or between adjacent racks only; avoid running it through long cable trays or across long paths. Maintain bend radii recommended by the hardware manufacturer and avoid crushing or kinking the cable. Confirm compatibility with the specific hardware model and firmware version for guaranteed passive DAC operation.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.15 kg |
| Package weight | 160 g |
| Cable length | 1 m |
| Data transfer rate | 40 Gbit/s |
| Product colour | Black |
| Connector 1 | QSFP |
| Connector 2 | QSFP |
| InfiniBand protocol | Yes |

## FAQ

### How much does the InfiniBand/fibre optic cable BlueOptics 498385-B21-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 — 147 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 23.07.2026 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/5037968/64333753_large.webp