# DAC cable CBO DEM-CB100Q28 100G QSFP28, 30 m

**URL:** https://aio.lv/en/product--blueoptics-dem-cb100q28-bl--4464864
**Data updated:** 2026-02-24 11:00 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** DEM-CB100Q28-BL
**EAN:** 4063232145129
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 87.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-dem-cb100q28-bl--4464864

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

Direct Attach Copper (DAC) cable CBO DEM-CB100Q28 is a 30 m passive assembly with QSFP28 connectors supporting 100G data rates. Designed for short-reach high-bandwidth connections between switches, routers and servers, it provides a low-latency, cost-effective link for data center topologies and aggregation racks where copper connectivity is required.

## Long description

Direct Attach Copper (DAC) cable CBO DEM-CB100Q28 100G QSFP28, 30 m is a passive copper assembly with QSFP28 connectors that supports 100G data rates over a 30-meter channel. Intended for short-reach, high-bandwidth connections, this cable links switches, routers and servers in data center topologies and aggregation racks where reliable, low-latency copper connectivity is required.
Advantages
The cable delivers a low-latency electrical connection with no external transceivers required, reducing power consumption and simplifying deployment. Its QSFP28 interface provides compatibility with standard 100G ports, and the passive copper design offers predictable signal performance for short-reach interconnects. The fixed 30 m length helps maintain consistent link characteristics in aggregation and top-of-rack installations.
Suitable for
 Short-reach 100G links between switches and aggregation equipment
 Direct server-to-switch connections in data center racks
 High-bandwidth interconnects in top-of-rack and spine-leaf architectures
 Environments where low latency and reduced power draw are priorities
Key specifications
 Connector type: QSFP28 to QSFP28
 Data rate: 100 Gbit/s
 Cable type: Passive direct-attach copper (DAC)
 Length: 30 m
 Compatibility: Designed for 100G-capable ports and equipment supporting QSFP28 electrical interfaces
 Application: Short-reach, rack-level and aggregation links in data centers
How to use
Install the cable by inserting QSFP28 plugs into the corresponding 100G ports on networking equipment until the connectors latch. Ensure both ends are seated firmly and that the connected devices are configured to recognize a direct attach copper link. No separate optical transceivers or additional power are required. Verify link status in the devices' management interface and run any required diagnostics to confirm expected throughput and error rates.
Usage recommendations
Avoid tight bends and excessive pulling force; follow standard cable management practices to preserve signal integrity. Use this passive DAC for distances up to 30 m within racks and between adjacent racks; for longer or fiber runs, consider appropriate active copper or optical solutions. Verify compatibility with your switch or server vendor's supported transceiver/cable list before deployment.

## FAQ

### How much does the DAC cable CBO DEM-CB100Q28 100G QSFP28 30 m cost, and is it available for purchase?

The price is 105.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 249 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 24.07.2026 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/4464864/59853446_large.webp