# Direct Attach Cable BlueOptics CBL-NTWK-0942-MQ28E30M 100GBASE-CR4 Copper DAC 3 m

**URL:** https://aio.lv/en/product--blueoptics-cbl-ntwk-0942-mq28e30m-bl--5039240
**Data updated:** 2026-03-07 15:12 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** CBL-NTWK-0942-MQ28E30M-BL
**EAN:** 4063232258027
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 119.49 €
**Prices and availability valid until:** 2026-08-16 23:59
**Price without VAT (21%):** 98.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-cbl-ntwk-0942-mq28e30m-bl--5039240

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.08.2026 | free |
| Pickup points | 19.08.2026 | 1.79 EUR |
| Courier delivery to door | 19.08.2026 | 4.99 EUR |

## Summary description

Direct Attach Cable BlueOptics CBL-NTWK-0942-MQ28E30M is a 3-meter copper DAC designed for 100GBASE-CR4 links. It provides a short-reach, low-latency direct electrical connection between network devices with QSFP28/CR4-compatible ports. Suitable for rack-to-rack or switch-to-server interconnects in data centers where fixed-length, cost-effective 100 Gbps connections are required.

## Long description

Direct Attach Cable BlueOptics CBL-NTWK-0942-MQ28E30M 100GBASE-CR4 Copper DAC 3 m is a 3-meter passive copper twinaxial cable assembly engineered for 100GBASE-CR4 short-reach connections. The cable offers a direct electrical link between devices with QSFP28/CR4-compatible ports, delivering low-latency, fixed-length connectivity suited to dense rack-to-rack and switch-to-server topologies in data centers where predictable 100 Gbps links are required.
Advantages
The cable provides a cost-effective alternative to optical modules for short distances, with low power consumption and minimal signal conversion overhead. Its fixed 3 m length simplifies cabling planning and reduces clutter in patching aisles. Compatibility with QSFP28/CR4 ports ensures straightforward plug-and-play installation and stable electrical performance for high-throughput environments.
Suitable for
 Rack-to-rack interconnects in data centers
 Switch-to-server connections with QSFP28/CR4 ports
 Top-of-rack and spine-leaf architectures requiring 100 Gbps short-reach links
 Closely spaced equipment where fixed-length, low-latency links are preferred
Key specifications
 Standard: 100GBASE-CR4 electrical specification
 Connector type: QSFP28/CR4-compatible twinax connectors
 Length: 3 meters fixed
 Cable type: Passive copper twinax
 Data rate: 100 Gbps aggregate
 Latency: Low, direct electrical link (no optical conversion)
How to use
Insert each QSFP28/CR4-compatible connector into the corresponding port on the two devices to be connected, ensuring secure seating and that port release latches engage. Use the fixed 3 m length to map rack or equipment layout and avoid excess cable that could obstruct airflow. No additional configuration is required at the physical layer beyond verifying port settings and link negotiation on the devices. Follow device vendor guidance for port speed and lane configuration if manual adjustments are needed.
Usage recommendations
For reliable operation, use the cable within the specified rack and equipment spacing where 3 m is appropriate; avoid sharp bends and excessive mechanical stress near the connector boots. Verify that the connected ports support 100GBASE-CR4 or QSFP28 electrical interfaces and that firmware and drivers on both ends are up to date to ensure proper link negotiation and performance.

## FAQ

### How much does the BlueOptics Direct Attach Cable CBL-NTWK-0942-MQ28E30M 3m cost, and is it available for purchase?

The price is 119.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 321 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 14.08.2026 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