# DAC cable CBO QSFP28-DAC-2M 2 m Passive Copper 100G for QSFP28 ports

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-2m-ql-bl--4466829
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-2M-QL-BL
**EAN:** 4063232101668
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 124.49 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 102.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-dac-2m-ql-bl--4466829

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

Direct Attach Copper (DAC) cable CBO QSFP28-DAC-2M is a 2-meter passive copper twinax designed for 100G connections via QSFP28 ports. It provides a low-latency, energy-efficient short-reach link for switches, routers and servers where high-throughput, cost-effective interconnects are required. Ideal for rack-to-rack and intra-rack deployments.

## Long description

Direct Attach Copper (DAC) cable CBO QSFP28-DAC-2M is a 2 m passive twinax copper cable engineered for 100G links using QSFP28 ports. Designed for short-reach connections inside racks or between adjacent racks, this 2-meter DAC provides low latency and power-efficient high-bandwidth interconnects for switches, routers and servers. The cable supports native 100 Gigabit Ethernet signalling and is suitable for environments where cost-effective, reliable and straightforward cabling is required.
Advantages
The passive twinax construction delivers low insertion loss and minimal signal degradation over short distances, reducing the need for more complex optical transceivers. As a copper cable, it consumes no optical transceiver power and offers a predictable electrical interface for QSFP28 ports. Its fixed 2 m length simplifies rack planning and reduces excess cabling. Compatibility with standard 100G QSFP28 ports ensures plug-and-play deployment without additional configuration.
Suitable for
 Rack-to-rack 100G connections in data centers
 Intra-rack uplinks between switches and servers
 High-throughput, short-reach interconnects for top-of-rack and spine switches
 Cost-sensitive environments requiring energy-efficient links
Key specifications
 Cable type: Passive twinax copper (Direct Attach Copper)
 Connector: QSFP28 to QSFP28
 Nominal length: 2 meters
 Data rate: 100 Gbit/s (supports 100 Gigabit Ethernet signalling)
 Typical use: Short-reach, intra-rack and rack-to-rack interconnects
 Latency: Low-latency electrical connection suitable for high-throughput traffic
 Power: Passive design (no active electronics in cable)
How to use
Install the QSFP28-DAC-2M by inserting each QSFP28 connector into the corresponding QSFP28 port on your network devices until the latch engages. Ensure ports are powered down or follow hot-plug guidelines specified by your hardware vendor if connecting to live systems. Verify link status through device LEDs or management interfaces and confirm that the interface is negotiated for 100G operation. Avoid sharp bends and excessive strain on the cable; maintain recommended bend radius to preserve electrical performance.
Usage recommendations
Use this passive 2 m DAC for short-distance, high-bandwidth links where optical transceivers are unnecessary. Keep service loop and bend radius within vendor guidelines, and deploy in environments with appropriate airflow and mounting to avoid mechanical stress. For distances beyond typical intra-rack or adjacent-rack runs, consider optical solutions or active copper options.

## FAQ

### How much does the CBO QSFP28-DAC-2M 2 m Passive DAC Cable 100G cost, and is it available for purchase?

The price is 124.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 270 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 28.07.2026 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/4466829/59852733_large.webp