# Direct Attach Cable (DAC) BlueOptics QSFP56–QSFP56 passive 200Gbps twinax copper for rack and adjacent-rack connections

**URL:** https://aio.lv/en/product--blueoptics-r5z79a-bl--11666952
**Data updated:** 2026-03-08 08:44 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** R5Z79A-BL
**EAN:** 4063232289755
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 231.99 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 191.73 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-r5z79a-bl--11666952

## 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

Passive Direct Attach Cable (DAC) by BlueOptics with QSFP56 connectors on both ends provides a 200 Gbps twinax copper link for short-reach connections inside racks and between adjacent racks. Designed for direct hardware-to-hardware links, it supports high-throughput server, switch, and storage interconnects while offering low latency and power usage compared with active optical modules.

## Long description

BlueOptics Passive Direct Attach Cable (DAC) with QSFP56–QSFP56 connectors provides a 200 Gbps twinax copper connection engineered for short-reach links inside racks and between adjacent racks. This DAC is intended for direct hardware-to-hardware connections between servers, switches and storage devices where low latency and low power consumption are required. The cable uses passive twinax copper technology and QSFP56 form-factor plugs to deliver high throughput without active electrical or optical components.
Advantages
The BlueOptics QSFP56–QSFP56 passive DAC offers a cost-efficient and low-power alternative to active optical modules for short-distance interconnects. It provides high aggregate bandwidth of 200 Gbps with minimal latency and reduced heat output. The integrated QSFP56 connectors simplify installation and ensure a secure physical connection suitable for dense rack environments. Passive twinax construction reduces component complexity and maintenance compared with transceiver-based links.
Suitable for
 Server-to-switch connections within the same rack
 Switch-to-switch links between adjacent racks
 High-throughput storage array interconnects at short distances
 Data center top-of-rack (ToR) and leaf-spine architectures for short links
Key specifications
 Connector type: QSFP56 to QSFP56 (both ends)
 Data rate: 200 Gbps aggregate bandwidth
 Cable type: Passive twinax copper
 Optimized use: Short-reach rack and adjacent-rack connections
 Latency: Low latency suitable for high-performance interconnects
 Power consumption: Passive design with minimal additional power draw
How to use
Insert each QSFP56 connector into the corresponding QSFP56 port on the devices to be connected, ensuring proper orientation and a seated connection. For best results, route the cable to avoid sharp bends and excessive strain; maintain recommended bend radius for twinax copper cables. Verify link status indicators on connected devices after installation to confirm the 200 Gbps link is established. When removing the cable, use the connector latch or pull mechanism to avoid stressing the cable assembly.
Usage recommendations
Use this passive DAC for short-distance, high-bandwidth links where energy efficiency and low latency are priorities. Avoid long runs beyond the intended short-reach range, and store or route the cable to prevent kinking. Check compatibility with device QSFP56 ports and firmware that support passive twinax links before deployment.

## FAQ

### How much does the BlueOptics QSFP56–QSFP56 passive 200Gbps DAC cost, and is it available for purchase?

The price is 231.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 187 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