---
product_id: 268720688
title: "OWC Mercury Helios 3S Thunderbolt 3 Single Slot PCIe Card Expansion Solution"
brand: "owc"
price: "₨256208"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/268720688-owc-mercury-helios-3s-thunderbolt-3-single-slot-pcie-card
store_origin: LK
region: Sri Lanka
---

# 40Gb/s Thunderbolt 3 speed 85W laptop charging power 8K DisplayPort 1.4 output OWC Mercury Helios 3S Thunderbolt 3 Single Slot PCIe Card Expansion Solution

**Brand:** owc
**Price:** ₨256208
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your pro setup with speed, style, and unstoppable expansion!

## Quick Answers

- **What is this?** OWC Mercury Helios 3S Thunderbolt 3 Single Slot PCIe Card Expansion Solution by owc
- **How much does it cost?** ₨256208 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/268720688-owc-mercury-helios-3s-thunderbolt-3-single-slot-pcie-card)

## Best For

- owc enthusiasts

## Why This Product

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

## Key Features

- • **8K Visual Brilliance:** Connect a dedicated DisplayPort 1.4 and elevate your setup with stunning 8K resolution.
- • **Power Through Your Day:** Keep your notebook charged at 85W while you work—no downtime, no hassle.
- • **Chain Up Your Creativity:** Daisy-chain up to 5 Thunderbolt devices and build a powerhouse workstation that keeps you ahead.
- • **Versatile PCIe Expansion:** Single-slot PCIe x16 supports half-length, full-height, single or double-width cards for ultimate flexibility.
- • **Blazing Thunderbolt 3 Speeds:** Experience ultra-fast 40Gb/s data transfer for seamless workflows and zero lag.

## Overview

The OWC Mercury Helios 3S is a premium Thunderbolt 3 PCIe expansion solution delivering 40Gb/s transfer speeds, 85W laptop charging, and a dedicated DisplayPort 1.4 for 8K displays. Its single-slot PCIe x16 design supports a wide range of cards, while daisy-chaining up to 5 Thunderbolt devices enables a scalable, high-performance workstation for Windows and macOS professionals.

## Description

OWC Mercury Helios 3S Thunderbolt 3 Single Slot PCIe Card Expansion Solution

## Features

- Lightning-fast 40Gb/s transfer speeds: (2) Thunderbolt 3 ports.
- See more: dedicated DisplayPort 1.4 connection for adding up to an 8K display.
- Charge while working: 85W notebook charging.
- Play your card: PCIe (x16) slot for half-length, full-height, single or double-width cards.
- Maximum potential: daisy-chain up to 5 additional Thunderbolt devices.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | OWC |
| Product Dimensions | 14.3 x 14.3 x 8.2 cm; 1.6 kg |
| Item model number | OWCHELIOS3S |
| Manufacturer | OWC - Other World Computing |
| Colour | Enclosure |
| Wattage | 150 watts |
| Operating System | Windows, macOS |
| Are Batteries Included | No |
| Item Weight | 1.6 kg |
| Guaranteed software updates until | unknown |

## Product Details

- **Brand:** OWC
- **Colour:** Enclosure
- **Hardware interface:** Thunderbolt
- **Special feature:** Play, Plug
- **Compatible devices:** Laptops, Personal Computer

## Images

![OWC Mercury Helios 3S Thunderbolt 3 Single Slot PCIe Card Expansion Solution - Image 1](https://m.media-amazon.com/images/I/51qnp1z4rRL.jpg)

## Questions & Answers

**Q: Does it support daisy chaining another Thunderbolt 3 device to the 2nd port? e.g. A 10gbe Thunderbolt network adapter.**
A: Hello. Yes, the OWC Mercury Helios 3S will allow or thunderbolt device to be daisy-chained off the second port of this chassis.

**Q: Can you install a gpu card like nvidia into this?**
A: Hello. No this unit does not support GPU's.

**Q: is this thunderbolt 4 compatible?**
A: Hello. This Mercury Helios 3S is a Thunderbolt 3 device, but can be used in a Thunderbolt 4 port as 3 is backwards compatible.

**Q: Will this work with bootcamp windows 10/11 for a lynx aes16e interface card?**
A: I bought this for my vive wireless pcie wigic card and just googled yours. From what I see so long as you have a thunderbolt 3 port it should work.vyour card should fit. However from the looks of the googled image you may have to keep the casing off. No loss it will still work just no shell.

## Frequently Bought Together

- OWC Mercury Helios 3S Thunderbolt 3 PCIe Expansion Solution
- Cable Matters [Intel Certified] 40Gbps Thunderbolt 4 Cable 3.3ft with 8K Video and 240W Charging - 1m, Compatible with USB4, Thunderbolt 3 Cable and USB-C

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**Shop now:** [https://www.desertcart.lk/products/268720688-owc-mercury-helios-3s-thunderbolt-3-single-slot-pcie-card](https://www.desertcart.lk/products/268720688-owc-mercury-helios-3s-thunderbolt-3-single-slot-pcie-card)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-13*