# Lightwin QSFP28 to QSFP28 DAC 100 Gbit Direct Attach Cable LWO-DAC-QSFP28-3M 3m

**URL:** https://aio.lv/en/product--lightwin-lwo-dac-qsfp28-3m--12270652
**Data updated:** 2026-04-16 16:29 (EEST)
**Category:** Network Cables
**Manufacturer:** Lightwin
**Manufacturer code:** LWO-DAC-QSFP28-3M
**EAN:** 9120138892306
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 100.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 83.46 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lightwin-lwo-dac-qsfp28-3m--12270652

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Direct Attach Cable (DAC) Lightwin LWO-DAC-QSFP28-3M is a passive 100 Gbit QSFP28-to-QSFP28 twinax cable with 3 m length for short-reach high-speed interconnects. Designed for use with compatible QSFP28 ports in switches, routers and network adapters, it provides low-latency, high-bandwidth connectivity for data center uplinks and server-to-switch links.

## Long description

Lightwin QSFP28 to QSFP28 DAC 100 Gbit Direct Attach Cable LWO-DAC-QSFP28-3M is a passive twinax copper cable with a 3 m length, engineered for short-reach, high-speed interconnects. It connects QSFP28 ports on switches, routers and network adapters to deliver 100 Gbit/s point-to-point links with low latency and predictable electrical performance. The cable is intended for use in data center top-of-rack and server-to-switch scenarios where a compact, cost-effective direct-attach solution is required.
Advantages
The Lightwin 3 m QSFP28 DAC provides a straightforward physical connection that requires no additional transceivers or optical modules, reducing component count and power consumption. Its passive twinax construction offers consistent signal integrity over short distances, and the QSFP28-to-QSFP28 form factor maintains full 100 Gbit/s bandwidth for compatible ports. The black jacket and compact connector housings support dense cabling runs while keeping rack layouts tidy.
Suitable for
Short-reach 100 Gbit/s links between switches in the same rack or adjacent racks
Server-to-switch connections where QSFP28 ports are available on both ends
Data center uplinks and spine-leaf topologies requiring low-latency copper links
When it may not be suitable
This passive DAC is designed for short distances and will not replace optical transceivers for long-reach connections; it is limited by electrical attenuation and channel requirements. It also requires both devices to have QSFP28 ports and to support passive DAC compatibility; some network equipment may restrict third-party or passive cable use.
Key specifications
Cable type: Direct Attach Copper (DAC), passive twinax
Data rate: 100 Gbit/s
Connector type: QSFP28 to QSFP28 (male to male)
Cable length: 3 m
Colour: Black
Typical application: Short-reach, high-speed interconnects in data centers
How to use
Ensure both devices have powered QSFP28 ports and that their firmware and configuration permit direct-attach passive cables. Align the QSFP28 connectors with the port guides and insert until the retention latch engages; follow the host equipment procedure for link activation. For removal, depress the connector latch and pull straight out. Verify link status through the network device management interface and monitor for expected 100 Gbit/s operation.
What to consider before purchase
Confirm both endpoints have QSFP28 ports and support passive DACs
Verify that a 3 m passive twinax cable meets your reach and rack layout requirements
Check equipment vendor policies for third-party passive cable compatibility
Usage recommendations
Use the Lightwin QSFP28 to QSFP28 3 m DAC for short, fixed-length interconnects inside racks or between adjacent racks, avoid tight bends near the connectors, and keep the cable secured to reduce mechanical stress. Verify link negotiation and monitor for expected throughput after installation.

## Specifications

| Feature | Value |
|---|---|
| Data transfer rate | 100 Gbit/s |
| Fiber mode structure | Multi-mode |

### Features

| Feature | Value |
|---|---|
| Cable length | 3 m |
| Cable type | DAC |
| Connector 1 | QSFP28 |
| Connector 2 | QSFP28 |
| Product colour | Black |
| AWG wire size | 26/30 |
| Ethernet interface type | 100 Gigabit Ethernet |
| Connector 1 gender | Male |
| Connector 2 gender | Male |
| Cable shape | Round |

### Operational conditions

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

### Packaging content

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

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | RoHS |

## FAQ

### How much does the Lightwin QSFP28–QSFP28 DAC 100 Gbit 3m cost, and is it available for purchase?

The price is 100.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 23.07.2026 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 Lightwin 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 Lightwin 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: cable length, cable type, connector 1, connector 2, 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/12270652/68193283_large.webp