# DAC cable CBO QSFP28-DAC-0.5M 0.5m Direct Attach QSFP28 passive copper

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-ci-bl--4466738
**Data updated:** 2026-02-24 11:00 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-0.5M-CI-BL
**EAN:** 4063232100500
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 87.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-dac-05m-ci-bl--4466738

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.89 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

CBO QSFP28-DAC-0.5M is a 0.5 m Direct Attach copper cable with QSFP28 connectors designed for short-range high-speed links. It provides a cost-effective, low-latency connection for 100GbE or other QSFP28-compatible equipment in racks and top-of-rack switches. Suitable for server-to-switch and switch-to-switch interconnects where short, reliable cabling is required.

## Long description

CBO QSFP28-DAC-0.5M is a 0.5 m Direct Attach copper cable with QSFP28 connectors designed for short-range high-speed links. It provides a low-latency, energy-efficient connection for 100GbE and other QSFP28-capable equipment in data center environments. The cable is intended for short interconnects such as server-to-switch and switch-to-switch links within racks or between adjacent racks where a compact, passive copper solution is appropriate.
Advantages
The passive QSFP28 direct attach cable offers low power consumption compared with active optical modules and eliminates the need for transceivers at each end, reducing overall system cost. Its short length and fixed copper construction minimise signal attenuation and latency, delivering reliable 100GbE performance for rack-level connectivity. The cable’s small form factor simplifies cable management in dense installations and reduces airflow obstruction inside server racks.
Suitable for
 Server-to-switch connections in the same rack
 Top-of-rack (ToR) switch uplinks to adjacent switches
 High-density patching between equipment in data centres
 Short-range 100GbE links where passive copper is acceptable
Key specifications
 Cable type: Direct Attach Copper (DAC), passive
 Connector type: QSFP28 to QSFP28
 Length: 0.5 m
 Data rate: suitable for 100 Gigabit Ethernet
 Application: short-range, rack-level interconnects
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on network equipment until the latch engages. Ensure both ends are properly seated and locked before powering the systems. Route the cable to avoid sharp bends and excessive tension; maintain the minimum bend radius recommended by the equipment manufacturer. For best results, use this 0.5 m direct attach cable for connections within the same rack or between adjacent racks to preserve signal integrity and minimise latency.
Usage recommendations
Verify compatibility of QSFP28 ports on both devices before installation and confirm that ports support passive DACs. Keep the cable clear of power supplies and hot airflow paths, and replace the cable if the connector latches or the copper jacket show physical damage.

## FAQ

### How much does the CBO QSFP28-DAC-0.5M 0.5m Direct Attach cable 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 — 226 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 03.08.2026 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/4466738/59858082_large.webp