# BlueOptics QSFP28 Direct Attach Cable SFP-DAC100-0.5M-BL 100G, DAC, 0.5 m, QSFP28–QSFP28, Black

**URL:** https://aio.lv/en/product--blueoptics-sfp-dac100-05m-bl--12260450
**Data updated:** 2026-04-12 10:50 (EEST)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** SFP-DAC100-0.5M-BL
**EAN:** 4063232339757
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 93.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 77.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfp-dac100-05m-bl--12260450

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

BlueOptics SFP-DAC100-0.5M-BL is a 0.5 m passive Direct Attach Cable (DAC) with QSFP28 connectors on both ends, designed for 100G connectivity. It provides a short-reach, low-latency copper link suitable for high-speed server-to-switch or switch-to-switch connections in data centers and high-performance networking environments.

## Long description

BlueOptics SFP-DAC100-0.5M-BL is a passive 100GBase-CR4 Direct Attach Cable (DAC) with QSFP28 to QSFP28 connectors and a fixed length of 0.5 m. Designed for short-range electrical connections in racks and between adjacent racks, this twinax copper cable follows MSA standards and is suitable for hardware platforms that accept QSFP28 passive DACs. The cable is black, weighs approximately 0.15 kg, and transmits up to 100 Gbit/s over short distances when used with compatible switch or router ports.
Advantages
The BlueOptics SFP-DAC100-0.5M-BL offers a low-latency, low-power passive connection that requires no active components in the cable itself. It is straightforward to install in data-center rack environments and provides a cost-effective alternative to active optical modules for short-distance links. Built using components from established manufacturers, the cable is intended for long service life and reliable operation when used with compatible hardware.
Suitable for
Short-distance uplinks between switches within the same rack or adjacent racks
High-speed interconnects for storage systems and server-to-switch connections
Data center top-of-rack and leaf-spine architectures requiring 100G links
When it may not be suitable
This passive QSFP28 DAC is intended for short-range electrical connections and is not suitable for long-distance links or for environments requiring optical transmission. It also requires that the connected hardware explicitly supports passive QSFP28 twinax DACs; compatibility should be confirmed with the switch, router, or storage vendor before purchase.
Key specifications
Cable type: Passive twinax Direct Attach Cable (DAC)
Connector A: QSFP28 male
Connector B: QSFP28 male
Data rate: 100 Gbit/s (100GBase-CR4)
Length: 0.5 m
Colour: Black
Approximate weight: 0.15 kg
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on your compatible networking devices until the latch clicks. Ensure devices are powered and configured to accept passive DAC links according to the vendor’s documentation. Verify link status and negotiated speed in the device management interface. For reliable operation, avoid sharp bends and keep the cable within recommended bend-radius limits.
What to consider before purchase
Confirm that your switch, router, or storage system supports passive QSFP28 twinax DACs
Verify that 0.5 m length meets your rack layout and port spacing requirements
Ensure 100GBase-CR4 electrical signalling is compatible with your hardware and intended use
Usage recommendations
Use this 0.5 m QSFP28 DAC for short, direct connections in data centers where low latency and low power consumption are priorities. Check vendor compatibility and avoid excessive bending to maintain signal integrity and long-term reliability.

## Specifications

| Feature | Value |
|---|---|
| Data transfer rate | 100 Gbit/s |
| Connector 1 | QSFP28 |
| Connector 2 | QSFP28 |
| Brand compatibility | Lancom |
| AWG wire size | 30 |
| Connector 1 gender | Male |
| Connector 2 gender | Male |
| Cable shape | Round |
| InfiniBand protocol | Yes |

### Technical details

| Feature | Value |
|---|---|
| Warranty period | 5 year(s) |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.15 kg |

### Other features

| Feature | Value |
|---|---|
| Cable length | 0.5 m |
| Cable type | DAC |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | CE, Federal Communications Commission (FCC), RoHS |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 70 |

### Logistics data

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 160 g |
| Package type | Blister |

### Features

| Feature | Value |
|---|---|
| Product colour | Black |

## FAQ

### How much does the BlueOptics QSFP28 SFP-DAC100-0.5M-BL 100G DAC cost, and is it available for purchase?

The price is 93.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 228 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 27.07.2026 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/12260450/68181459_large.webp