# DAC Cable BlueOptics DAC-QSFP-100G-0.5M-BL 0.5m QSFP28 Male/Male

**URL:** https://aio.lv/en/product--blueoptics-dac-qsfp-100g-05m-bl--4470678
**Data updated:** 2026-02-25 16:35 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** DAC-QSFP-100G-0.5M-BL
**EAN:** 4063232145068
**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-dac-qsfp-100g-05m-bl--4470678

## 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

The BlueOptics DAC-QSFP-100G-0.5M-BL is a 0.5m DAC cable designed for high-speed data transmission. It features QSFP28 connectors on both ends, ensuring reliable connectivity for data centers and networking applications. This cable is ideal for connecting switches, routers, and servers in high-performance environments.

## Long description

The BlueOptics DAC-QSFP-100G-0.5M-BL is a 0.5 m direct attach cable (DAC) with QSFP28 male connectors on both ends, designed for short-range, high-speed data transmission in data centers and network racks. This passive twinax copper cable supports 100GBase-CR4 signaling and is intended for linking compatible switches, routers and servers across adjacent rack units or within the same rack. The cable uses 30 AWG conductors and complies with MSA guidelines for form factor and interoperability.
Advantages
This 0.5 m QSFP28-to-QSFP28 DAC offers a low-latency, low-power connectivity option for short distances where optical transceivers are not required. As a passive twinax solution it does not rely on active electronics in the cable, resulting in reduced power consumption and a simple, robust design. Manufactured from quality components and tested for compatibility with major hardware platforms, the cable is suitable for reliable, long-term operation in high-density network environments.
Suitable for
 Connecting QSFP28 ports on switches and routers within the same rack or between adjacent racks
 High-bandwidth server-to-switch or switch-to-switch links at 100 Gbps
 Use in data center top-of-rack and leaf-spine architectures for short reach links
Key specifications
 Cable length: 0.5 meter
 Connector type: QSFP28 male to QSFP28 male
 Data rate: up to 100 Gbps (100GBase-CR4 compatible)
 Cable type: passive twinax copper (Direct Attach Cable)
 Conductor gauge: 30 AWG
 Form-factor compliance: MSA-compliant QSFP28
How to use
Before installation, verify that both devices explicitly support passive QSFP28 DACs and the 100GBase-CR4 electrical interface. Insert each QSFP28 connector into a compatible port until the latch engages. Route the cable to avoid sharp bends, excessive stretching or compression, and secure it within the rack to prevent strain on connectors. No separate power or configuration on the cable is required; link negotiation and monitoring are handled by the connected hardware according to supported protocols.
Usage recommendations
Use this BlueOptics 0.5 m DAC for short, high-bandwidth connections where low latency and low power are priorities. Avoid use over distances beyond the specified 0.5 m and confirm hardware compatibility with passive DACs to ensure proper operation.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.15 kg |
| Package weight | 160 g |
| Cable length | 0.5 m |
| Data transfer rate | 100 Gbit/s |
| Product colour | Black, Silver |
| Connector 1 | QSFP28 |
| Connector 2 | QSFP28 |
| InfiniBand protocol | Yes |

## FAQ

### How much does the DAC Cable BlueOptics DAC-QSFP-100G-0.5M-BL 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/4470678/64300541_large.webp