# BlueOptics K9HPR-BL InfiniBand/fibre optic cable 1 m QSFP28 4xSFP28 Male/Male

**URL:** https://aio.lv/en/product--blueoptics-k9hpr-bl--5038523
**Data updated:** 2026-03-07 15:11 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** K9HPR-BL
**EAN:** 4063232007991
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 134.49 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 111.15 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-k9hpr-bl--5038523

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 04.08.2026 | free |
| Pickup points | 07.08.2026 | 1.89 EUR |
| Courier delivery to door | 07.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics K9HPR-BL is a 1 m InfiniBand/fibre optic cable featuring a QSFP28 connector and 4xSFP28 connectors. It is designed for high-speed data transmission in data centers and networking environments. The male/male configuration ensures compatibility with various devices, providing reliable connectivity and performance.

## Long description

The BlueOptics K9HPR-BL InfiniBand/fibre optic cable is a 1 m direct attach solution with a QSFP28 connector on one end and four SFP28 connectors on the other (QSFP28 to 4xSFP28, male/male). Designed for short-reach, high-speed interconnects in racks and adjacent racks, this passive twinax copper cable supports 100GBase-CR4 and 4x25GBASE-CR electrical transmission and is suitable for environments that require low latency and reliable 100 Gbit/s links over a 1 metre distance.
Advantages
The cable follows MSA-compliant form factors and uses 26 AWG twinax construction to provide stable signal integrity for 100 Gbit/s and 4x25 Gbit/s channel aggregation. Passive design keeps power consumption minimal and reduces points of failure compared with active modules. Components are selected to meet standard quality and compatibility requirements with major networking hardware that supports the equivalent cable type.
Suitable for
Short-reach connections between switches and routers within the same rack or adjacent racks
High-density data centre uplinks and top-of-rack aggregation
Interconnects for storage systems and servers supporting 100GBase-CR4 or 4x25GBASE-CR
InfiniBand and Ethernet applications requiring low latency 100 Gbit/s links
Key specifications
Connector type: QSFP28 (one end) to 4x SFP28 (other end), male to male
Length: 1 metre
Cable type: passive twinax copper
Wire gauge: 26 AWG
Supported protocols: 100GBase-CR4, 4x25GBASE-CR, Ethernet, FCoE, Fibre Channel, InfiniBand (protocol support depends on device firmware)
Typical power consumption: passive design (very low power draw)
How to use
Insert the QSFP28 connector into the corresponding QSFP28 port on your switch or NIC, and plug the four SFP28 connectors into the target SFP28 ports on the connected device or breakout module, ensuring secure mating until the retention mechanism clicks. Verify that both devices support passive DAC twinax cables and the intended transmission modes (100GBase-CR4 or 4x25GBASE-CR) in their configuration and firmware. After physical insertion, confirm link status and speed in your device management interface and perform a short traffic test to validate connectivity.
Usage recommendations
Use the BlueOptics K9HPR-BL cable for short-distance rack-level links where passive twinax is supported. Avoid sharp bends and maintain minimum bend radius along the cable run. Ensure both connected devices explicitly support passive QSFP28-to-4xSFP28 DACs and the intended protocols. For deployment in critical systems, test the cable in your environment before large-scale rollout and keep spare cables on hand to simplify maintenance.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.25 kg |
| Package weight | 260 g |
| Cable length | 1 m |
| Data transfer rate | 100 Gbit/s |
| Product colour | Coral, Silver |
| Connector 1 | QSFP28 |
| Connector 2 | 4xSFP28 |
| InfiniBand protocol | Yes |

## FAQ

### How much does the InfiniBand/fibre optic cable BlueOptics K9HPR-BL cost, and is it available for purchase?

The price is 134.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 24 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 04.08.2026 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/5038523/64336787_large.webp