# CBO InfiniBand QSFP28 Cable CAB-Q28-Q28-5M-BL — 5 m, QSFP28 to QSFP28, passive copper

**URL:** https://aio.lv/en/product--blueoptics-cab-q28-q28-5m-bl--4470526
**Data updated:** 2026-02-25 16:34 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** CAB-Q28-Q28-5M-BL
**EAN:** 4063232641553
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 212.49 €
**Prices and availability valid until:** 2026-08-15 23:59
**Price without VAT (21%):** 175.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-cab-q28-q28-5m-bl--4470526

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.08.2026 | free |
| Pickup points | 18.08.2026 | 1.89 EUR |
| Courier delivery to door | 18.08.2026 | 4.99 EUR |

## Summary description

This CBO InfiniBand cable (model CAB-Q28-Q28-5M-BL) is a 5-meter QSFP28-to-QSFP28 link designed for high-speed data interconnects. As a passive copper assembly, it provides low-latency connectivity between compatible QSFP28 ports in switches, servers and storage systems. Suitable for short-range rack and data-center interconnects where a reliable 100Gbps-class physical link is required.

## Long description

This CBO InfiniBand QSFP28 cable (5 m, QSFP28 to QSFP28, passive copper) is a short-range high-speed interconnect designed for direct attachment between compatible QSFP28 ports in switches, servers and storage systems. The assembly supports 100Gbps-class links with low electrical latency and is intended for use inside racks and between adjacent racks in data-center environments where a reliable, low-cost copper connection is preferred over optical transceivers for distances up to five meters.
Advantages
The passive copper construction provides consistent low-latency performance without the need for additional power or active electronics, simplifying deployment and reducing operational complexity. As a purpose-built QSFP28-to-QSFP28 assembly, it offers plug-and-play compatibility with devices that accept standard QSFP28 passive copper cables and delivers a predictable electrical channel for short link lengths. The 5 m length balances reach and signal integrity for typical rack-to-rack or within-rack connections.
Suitable for
 High-density data-center rack interconnects
 Direct server-to-switch or switch-to-switch links within a single row of racks
 Storage system connections requiring 100Gbps-class links
 Short-reach InfiniBand fabric segments and test lab setups
Key specifications
 Cable type: Passive copper twinax assembly
 Connector type: QSFP28 to QSFP28
 Link capacity: Supports 100Gbps-class electrical interfaces
 Length: 5 meters
 Use case: Short-range, within-rack and adjacent-rack interconnects
 Latency: Low electrical latency suitable for InfiniBand and high-performance Ethernet
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port until the connector latches. Ensure that both devices are powered off when possible during initial insertion to avoid hot-plug transients, and verify link status through the host device management interfaces after connection. Use the cable within recommended bend radius limits and avoid sharp kinks or tension on the assembly. For best signal integrity, route the cable away from high-interference power runs and secure it to rack cabling management to prevent strain on ports.
Usage recommendations
Use this passive QSFP28 copper cable for short-range 100Gbps-class links where low-latency and cost efficiency are priorities. Avoid using the cable beyond the specified 5 m reach and confirm device compatibility with passive copper QSFP28 assemblies before deployment to ensure reliable link negotiation and performance.

## FAQ

### How much does the CBO InfiniBand QSFP28 Cable CAB-Q28-Q28-5M-BL cost, and is it available for purchase?

The price is 212.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 353 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 13.08.2026 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/4470526/59879386_large.webp