# InfiniBand cable CBO 100G-Q28-S28-C-0301-BL 3 m QSFP28 to 4×SFP28

**URL:** https://aio.lv/en/product--blueoptics-100g-q28-s28-c-0301-bl--4472295
**Data updated:** 2026-02-25 16:36 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** 100G-Q28-S28-C-0301-BL
**EAN:** 4063232641812
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 192.99 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 159.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-100g-q28-s28-c-0301-bl--4472295

## 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

Direct-attach InfiniBand cable from CBO, model 100G-Q28-S28-C-0301-BL. Length 3 m, QSFP28 connector on one end and four SFP28 connectors on the other, designed for 100 Gb/s links and direct server, switch or storage connections. Provides compact, low-latency interconnect for data centre and high-performance computing setups. Passive copper assembly for short-reach connections.

## Long description

InfiniBand cable CBO 100G-Q28-S28-C-0301-BL is a 3 m direct-attach copper assembly with a QSFP28 connector on one end and four SFP28 connectors on the other. Designed for 100 Gb/s links, this cable provides a compact, low-latency interconnect for servers, switches and storage in data centre and high-performance computing environments. The passive copper design is intended for short-reach connections where reliable, high-speed connectivity and minimal signal processing are required.
Advantages
The cable supports 100 Gb/s aggregated bandwidth through a single QSFP28 port split into four independent SFP28 channels, enabling efficient port consolidation and straightforward top-of-rack or rack-to-rack cabling. Its passive copper construction offers predictable latency and low power consumption compared with active optical assemblies for short distances. The 3 m length provides flexibility for typical rack and cabinet layouts while keeping signal integrity for short-reach InfiniBand and Ethernet links.
Suitable for
 Direct server-to-switch or switch-to-switch connections in data centres
 High-performance computing clusters requiring low-latency interconnects
 Storage arrays and SAN environments with 100 Gb/s ports
 Top-of-rack consolidation where a QSFP28 port is split into multiple SFP28 links
Key specifications
 Connector types: QSFP28 (one end) to 4 × SFP28 (other end)
 Nominal aggregated data rate: 100 Gb/s (split across four lanes)
 Cable type: Passive copper direct-attach
 Cable length: 3 metres
 Intended reach: short-reach data centre connections
 Application: InfiniBand and compatible 100 Gb/s Ethernet deployments
How to use
Install the QSFP28 end into a compatible QSFP28 port on a switch or host adapter and insert the SFP28 ends into the target SFP28 ports on connected devices. Ensure ports are configured for the appropriate link speed and lane mapping according to your switch or HBA documentation. Route the cable to avoid tight bends and sharp edges; maintain recommended bend radius to preserve signal integrity. Passive assemblies do not require external power or transceiver configuration beyond standard port settings.
Usage recommendations
Use this passive 3 m InfiniBand cable for short intra-rack or adjacent-rack connections. Verify hardware compatibility with QSFP28-to-SFP28 passive breakouts and confirm firmware or switch settings for breakout mode where applicable. Avoid prolonged exposure to temperatures or environments outside data centre norms and replace the cable if physical damage or connector wear is observed.

## FAQ

### How much does the InfiniBand cable CBO 100G-Q28-S28-C-0301-BL QSFP28 3m cost, and is it available for purchase?

The price is 192.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 29 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/4472295/59855930_large.webp