# QSFP28 DAC Cable BlueOptics QSFP28-DAC-3M-AT-BL 3m Male/Male

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-at-bl--4466839
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-AT-BL
**EAN:** 4063232101804
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 134.49 €
**Prices and availability valid until:** 2026-08-07 23:59
**Price without VAT (21%):** 111.15 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-at-bl--4466839

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 05.08.2026 | free |
| Pickup points | 10.08.2026 | 1.89 EUR |
| Courier delivery to door | 10.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QSFP28-DAC-3M-AT-BL is a 3-meter Direct Attach Copper cable with QSFP28 connectors on both ends. It is designed for high-speed data transmission in data centers and networking applications. This cable provides a cost-effective solution for connecting switches, routers, and servers while ensuring low latency and high performance.

## Long description

The BlueOptics QSFP28-DAC-3M-AT-BL is a 3‑metre passive Direct Attach Copper (DAC) cable with QSFP28 connectors on both ends. Designed for short-reach, high‑speed links in data centres and network racks, this 100GBase‑CR4 compliant twinax cable supports electrical transmission over a 3 m distance and is intended for connecting switches, routers, servers and storage systems that accept QSFP28 DAC modules.
Advantages
This QSFP28 DAC cable offers low latency and low power consumption typical of passive twinax assemblies, while providing a cost‑effective alternative to active optical transceivers for short links. The cable follows MSA mechanical and electrical specifications for QSFP28 interfaces, enabling interoperability across major hardware platforms. Its design uses industry‑grade components to deliver stable transmission and an expected long service life for rack‑level interconnects.
Suitable for
100G direct connections between adjacent racks or within the same rack
Switch-to-switch, switch-to-router and switch-to-server links at 100GBase‑CR4
High‑bandwidth short‑reach applications such as Ethernet, FCoE and InfiniBand
Key specifications
Cable type: Passive QSFP28 twinax copper (DAC)
Connector type: QSFP28 male to QSFP28 male
Length: 3 metres
Supported data rate: up to 100 Gbps (100GBase‑CR4)
Wire gauge: 26 AWG twinax
Compliance: QSFP28 MSA electrical/mechanical form factor
Typical power consumption: passive (near 0.1 W per link when measured at system level)
How to use
Install the QSFP28 connector ends into compatible QSFP28 ports on networking equipment until they click into place. Confirm that the connected devices support passive DAC cables and the 100GBase‑CR4 protocol. No external power or configuration is required for the cable itself; link configuration and protocol settings are managed by the connected hardware and network software. After insertion, verify the link status and speed via the host device management interface.
Usage recommendations
Use this 3 m passive QSFP28 DAC for short‑reach in‑rack or adjacent‑rack connections where a low‑latency and cost‑effective 100G link is required. Avoid routing the cable near strong electromagnetic sources and do not bend the twinax assembly beyond the manufacturer’s minimum bend radius to preserve signal integrity.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.15 kg |
| Package weight | 160 g |
| Cable length | 3 m |
| Data transfer rate | 100 Gbit/s |
| Product colour | Black |
| Connector 1 | QSFP28 |
| Connector 2 | QSFP28 |
| InfiniBand protocol | Yes |

## FAQ

### How much does the QSFP28 DAC Cable BlueOptics QSFP28-DAC-3M-AT-BL cost, and is it available for purchase?

The price is 134.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 337 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 05.08.2026 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/4466839/64293650_large.webp