# Direct Attach Copper (DAC) Cable CBO QSFP28 to 4×SFP28 3m Length

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-3m-pt-bl--4466090
**Data updated:** 2026-02-25 16:31 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-3M-PT-BL
**EAN:** 4063232123134
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 192.99 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 159.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-3m-pt-bl--4466090

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.07.2026 | free |
| Pickup points | 03.08.2026 | 1.89 EUR |
| Courier delivery to door | 03.08.2026 | 4.99 EUR |

## Summary description

CBO DAC cable QSFP28 to 4×SFP28, 3 m length. Passive direct-attach copper assembly for connecting a QSFP28 port to four SFP28 ports in networking equipment. Suitable for short-reach, high-density server, switch and storage interconnects where a compact, low-latency copper link is required. Provides a fixed, pre-terminated connection that simplifies rack cabling and reduces transceiver inventory.

## Long description

Direct Attach Copper (DAC) Cable CBO QSFP28 to 4×SFP28 3m Length is a passive copper interconnect designed to link a single QSFP28 port to four SFP28 ports. The 3-meter fixed assembly delivers a compact, low-latency physical connection for short-reach data center and enterprise networking environments. As a pre-terminated cable, it reduces the need for separate transceivers and simplifies rack cabling while supporting high-density server, switch and storage interconnects.
Advantages
The DAC assembly offers predictable electrical performance and minimal latency compared with optical modules for short distances. Its passive copper construction eliminates the need for power at the cable ends, which helps reduce heat and power consumption in densely populated racks. The fixed, pre-terminated form factor streamlines installation and inventory management by removing separate transceiver purchases and reducing spare parts complexity.
Suitable for
High-density rack-to-rack or within-rack connections in data centers
Server to top-of-rack switch uplinks using QSFP28 and SFP28 ports
Storage array interconnects where low latency is required
Short-reach links in enterprise core and aggregation layers
Key specifications
Cable type: Passive direct attach copper
Connector configuration: QSFP28 to four SFP28 connectors
Length: 3 meters
Applications: Short-reach, high-density interconnects for servers, switches and storage
Latency: Low, suitable for latency-sensitive traffic
Form factor: Fixed, pre-terminated assembly for simplified cabling
How to use
Connect the QSFP28 plug to the host device QSFP28 port and insert each SFP28 plug into the corresponding SFP28 ports on the remote equipment. Ensure that both ends are aligned and fully seated until the connector latches engage. Use cable routing management to avoid sharp bends and to maintain recommended bend radius for copper assemblies. No additional module configuration is required beyond standard port enablement and network configuration on the connected devices.
Usage recommendations
For reliable operation, use this DAC cable in distances up to 3 meters in typical data center environments and avoid routing near high EMI sources. Maintain proper airflow and avoid placing the cable under compression. Verify compatibility with device vendor port specifications and supported link speeds (e.g., 25/100 Gbps modes where applicable) before deployment.

## FAQ

### How much does the CBO DAC Cable QSFP28 to 4×SFP28 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 29.07.2026 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/4466090/59854123_large.webp