---
product_id: 67437430
title: "10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices, 0.5-Meter(1.6ft)"
brand: "10gtek"
price: "€ 44.11"
currency: EUR
in_stock: true
reviews_count: 13
category: "10 Gtek"
url: https://www.desertcart.gr/products/67437430-10gtek-40g-qsfp-dac-cable-40gbase-cr4-passive-direct-attach
store_origin: GR
region: Greece
---

# 40Gbps blazing speed QSFP+ to QSFP+ direct attach 100% tested & certified 10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices, 0.5-Meter(1.6ft)

**Brand:** 10gtek
**Price:** € 44.11
**Availability:** ✅ In Stock

## Summary

> ⚡ Connect Fast, Stay Ahead: The Secret Weapon for Network Pros

## Quick Answers

- **What is this?** 10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices, 0.5-Meter(1.6ft) by 10gtek
- **How much does it cost?** € 44.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/67437430-10gtek-40g-qsfp-dac-cable-40gbase-cr4-passive-direct-attach)

## Best For

- 10gtek enthusiasts

## Why This Product

- Trusted 10gtek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact 0.5m Length:** Perfectly sized for dense data centers, reducing clutter while maximizing performance.
- • **Certified Reliability:** Each cable undergoes rigorous individual testing in 10Gtek’s Compatibility LAB to guarantee flawless operation.
- • **Blazing 40Gbps Throughput:** Experience ultra-low latency and lightning-fast data transfer that keeps your network ahead of the curve.
- • **Cost-Effective Copper Twinax:** Skip expensive fiber optics without sacrificing speed or quality—premium performance at a fraction of the cost.
- • **Plug & Play QSFP+ Compatibility:** Seamlessly connects Cisco, Meraki, Mikrotik, and Open Switch devices with zero hassle.

## Overview

The 10Gtek 40G QSFP+ DAC Cable is a 0.5-meter passive direct attach copper twinax cable designed for high-performance 40GbE networking. Fully compatible with Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, and Open Switch devices, it delivers ultra-low latency and reliable 40Gbps data transfer. Each cable is individually tested in 10Gtek’s Compatibility LAB to ensure seamless plug-and-play operation, making it the cost-effective choice for data centers seeking fiber-like speeds without the fiber price tag.

## Description

desertcart.com: 10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices, 0.5-Meter(1.6ft) : Electronics

Review: It works - Seems to b of decent build quality. A little thinner than Cisco-branded DACs, but a bit more flexible. Didn't test throughput extensively, but no complaints moving large amounts of data between devices. Can confim it works perfectly fine on 10G SFP+ ports on several Cisco devices, as well as a Mellanox 10/25G NIC. The fact you can order these at a multitude of lengths, and significantly cheaper--unless there's compatibility issues with certain equipment, or you have a service agreement that forbids it, I don't see a caveat.
Review: 10Gtek DAC Cable: Because Fiber Optics Are So Overrated - Alright, if you’re here, you probably already know this isn’t your average “plug in and charge your phone” cable. This 10Gtek SFP+ DAC Twinax cable is the techie equivalent of a high-speed dating service for your network gear — direct, fast, and no nonsense. It’s passive, it’s copper, and it screams “I’m serious about data” at 10 gigabits per second. No fancy fiber optic lasers or magic dust — just good old-fashioned metal doing what it does best: carrying your bits and bytes like a champ. I mean, sure, it looks like a glorified chunk of wire with connectors on both ends, but don’t let the humble appearance fool you. This cable is the secret handshake for networking pros who want low latency and high performance without breaking the bank. If you want your servers to gossip at lightning speed and keep your data center from turning into a digital snail race, this baby’s your go-to. Just don’t ask me to explain exactly how it works — I’m still figuring out what “10GBASE-CU” means without Googling.

## Features

- Compatible for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices
- QSFP+ to QSFP+ 40GbE DAC Direct Attach Copper Twinax Cable, 0.5-meter (Note that this length includes two connectors.)
- QSFP+ DAC, 40G DAC, QSFP+ to QSFP+ DAC, QSFP+ Direct Attach Copper Twinax Cable
- 100% Compatible with Cisco. 10Gtek owns Compatibility LAB to meet the coding requirements for various brands of switches and routers. Each DAC Cable is individually tested before delivery.
- 10Gtek offer more compatible options, if your brands not listed above, pls contact us.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XGWVWWM |
| Best Sellers Rank | #2 in Computer Networking Transceivers |
| Brand | 10Gtek |
| Cable Type | PVC Copper Cable |
| Color | 40G Q10-Q10 |
| Compatible Devices | QSFP-H40G-CUXM |
| Compatible Phone Models | Cisco QSFP-H40G-CU50CM |
| Connector Gender | Male-to-Male |
| Connector Type | Qsfp+ |
| Customer Package Type | Standard Packaging |
| Data Transfer Rate | 40 Gigabytes Per Second |
| Date First Available | March 8, 2017 |
| Ethernet cable category | Cat 8 |
| Frequency | 40 GHz |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.84 ounces |
| Manufacturer | 10Gtek |
| Number of Items | 1 |
| Number of Pins | 76 |
| Package Dimensions | 9.65 x 9.21 x 1.14 inches |
| Recommended Uses For Product | Data center networking, device connectivity |
| Shape | Round |
| Special Feature | QSFP-H40G-CUXM |
| Specification Met | Qsfp+ Msa |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** 10Gtek
- **Cable Type:** PVC Copper Cable
- **Compatible Devices:** QSFP-H40G-CUXM
- **Connector Type:** Qsfp+
- **Special Feature:** QSFP-H40G-CUXM

## Images

![10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices, 0.5-Meter(1.6ft) - Image 1](https://m.media-amazon.com/images/I/31YcRivb7nL.jpg)
![10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices, 0.5-Meter(1.6ft) - Image 2](https://m.media-amazon.com/images/I/31w3ulBvT+L.jpg)
![10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices, 0.5-Meter(1.6ft) - Image 3](https://m.media-amazon.com/images/I/31zSApaz-0L.jpg)
![10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices, 0.5-Meter(1.6ft) - Image 4](https://m.media-amazon.com/images/I/41USiCIjLnL.jpg)
![10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices, 0.5-Meter(1.6ft) - Image 5](https://m.media-amazon.com/images/I/41eO5N3K4-L.jpg)

## Available Options

This product comes in different **Color, Size, Number Of Items** options.

## Questions & Answers

**Q: Does this cable work with Dell switches? Specifically, a X1052?**
A: This cable is Cisco compatible, so it will not work the Dell X1052 switch. For Dell X1052, we would recommend  that you purchase this Dell compatible DAC cable, please visit by https://www.amazon.com/dp/B088FNB7MR?ref=myi_title_dp
If any questions, please contact us at the following link and we'll work offer you the best solution,

https://www.amazon.com/hz/help/contact/AE2OZG2NN3099?marketplaceID=ATVPDKIKX0DER&ref_=v_sp_contact_seller&sellerID=AE2OZG2NN3099&_encoding=UTF8&

**Q: Anyone know if these are compatible with the unifi 48-port switches (with sfp+ ports)?**
A: Yes. I'm using several of the 5 meter cables to route through the CMA on each of my servers to a couple Unifi 16-Port Aggregation switches. I've also used them on my 48 port 750w switches' SFP+ ports before. It's a different model variation, however I'm still pretty certain it will work for yours. Also, I'd like to add, I'm using a bunch of different SFP+ cables for my Unifi equipment. I'm yet to run into an SFP+ compatibility issue across the different variations I've used. Including cables made for Cisco, Mellanox, Intel and brands from 10Gtek, Cable Matters, Wiitek, ipolex, QSFPTEK, to Ubiquiti's own SFP+ transceivers/DAC's.
TL;DR, honestly, Ubiquiti SFP+ ports seem to be compatible with just about every cable on the market. If it fits, it should work. Also, if it for some reason doesn't, you should be able to return the cable and get a refund.

**Q: Does this work with Fortinet Fortigate's?**
A: In our experience, Fortinet Fortigate's doesn't need special coding. We suggest that you can purchase a sample for testing first. If it doesn't work, we will provide you with 30 Days Free-returned.
If any questions, please contact us at the following link and we'll work offer you the best solution,

https://www.amazon.com/hz/help/contact/AE2OZG2NN3099?marketplaceID=ATVPDKIKX0DER&ref_=v_sp_contact_seller&sellerID=AE2OZG2NN3099&_encoding=UTF8&

**Q: Can I connect two switch’s with a sfp and sfp+ port together with this?**
A: 10Gtek states that the 10G SFP+ is not backward compatible to SFP. 
SFP+ has a 10G spec and an SFP has a 1G spec and is incompatible. The main difference between SFP and SFP+ is the data rate. And due to different data rate, the applications and transmission distance is also different.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works
*by J***N on August 1, 2025*

Seems to b of decent build quality. A little thinner than Cisco-branded DACs, but a bit more flexible. Didn't test throughput extensively, but no complaints moving large amounts of data between devices. Can confim it works perfectly fine on 10G SFP+ ports on several Cisco devices, as well as a Mellanox 10/25G NIC. The fact you can order these at a multitude of lengths, and significantly cheaper--unless there's compatibility issues with certain equipment, or you have a service agreement that forbids it, I don't see a caveat.

### ⭐⭐⭐⭐⭐ 10Gtek DAC Cable: Because Fiber Optics Are So Overrated
*by D***T on September 22, 2025*

Alright, if you’re here, you probably already know this isn’t your average “plug in and charge your phone” cable. This 10Gtek SFP+ DAC Twinax cable is the techie equivalent of a high-speed dating service for your network gear — direct, fast, and no nonsense. It’s passive, it’s copper, and it screams “I’m serious about data” at 10 gigabits per second. No fancy fiber optic lasers or magic dust — just good old-fashioned metal doing what it does best: carrying your bits and bytes like a champ. I mean, sure, it looks like a glorified chunk of wire with connectors on both ends, but don’t let the humble appearance fool you. This cable is the secret handshake for networking pros who want low latency and high performance without breaking the bank. If you want your servers to gossip at lightning speed and keep your data center from turning into a digital snail race, this baby’s your go-to. Just don’t ask me to explain exactly how it works — I’m still figuring out what “10GBASE-CU” means without Googling.

### ⭐⭐⭐⭐⭐ Widely compatible, especially for the price-point
*by A***R on December 10, 2025*

After several years, these DACs have proven to be the most widely compatible and performant affordable cables I've used. They have worked with everything I've thrown at them. Highly recommended.

## Frequently Bought Together

- 10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU50CM, Meraki MA-CBL-40G-50CM, Mikrotik, Open Switch Devices, 0.5-Meter(1.6ft)
- 10Gtek 10GBase-SR SFP+ LC Transceiver, 10G 850nm Multimode SFP Module, up to 300 Meters, for Cisco SFP-10G-SR, Meraki MA-SFP-10GB-SR, Ubiquiti UniFi UF-MM-10G, Fortinet, Mikrotik and More, Pack of 10

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-27*