--- product_id: 388301174 title: "Mercury Helios 3S Thunderbolt 3 PCIe Expansion Solution" brand: "owc" price: "€ 637.47" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.at/products/388301174-mercury-helios-3s-thunderbolt-3-pcie-expansion-solution store_origin: AT region: Austria --- # 40Gbps Thunderbolt 3 speed 85W notebook charging power Supports up to 8K DisplayPort 1.4 Mercury Helios 3S Thunderbolt 3 PCIe Expansion Solution **Brand:** owc **Price:** € 637.47 **Availability:** ✅ In Stock ## Summary > ⚡ Expand your power. Elevate your workflow. ## Quick Answers - **What is this?** Mercury Helios 3S Thunderbolt 3 PCIe Expansion Solution by owc - **How much does it cost?** € 637.47 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/388301174-mercury-helios-3s-thunderbolt-3-pcie-expansion-solution) ## 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 - • **Tool-Free Card Swaps:** Switch PCIe cards in minutes—no tools, no hassle, just pure productivity. - • **Power Through Your Day:** 85W charging keeps your laptop powered while you create, edit, and innovate. - • **8K-Ready DisplayPort 1.4 Output:** Connect stunning 8K displays and elevate your visual workspace. - • **Pro-Level PCIe Card Flexibility:** Supports half-length, full-height, double-width cards for ultimate expansion freedom. - • **Blazing 40Gbps Thunderbolt 3 Transfer:** Experience ultra-fast data flow that keeps your workflow lightning quick. ## Overview The OWC Mercury Helios 3S is a Thunderbolt 3 PCIe expansion solution delivering 40Gbps transfer speeds, supporting professional-grade PCIe cards up to double-width size, and featuring DisplayPort 1.4 for 8K display connectivity. It offers tool-free card installation and 85W laptop charging, making it the ultimate external PCIe dock for creative pros and power users on macOS and Windows. ## Description Using a video, audio, storage, network, or even gaming PCIe card with a Mac Pro or PC desktop is a simple matter of inserting your card into an open slot. But what do you do if you have a laptop or even a space-confined desktop like an iMac or Mac mini that doesn't contain a PCIe slot, The OWC Mercury Helios 3S is an easy to use yet powerful expansion solution that adds an external PCIe slot to your Thunderbolt 3 equipped computer. Now you can maximize your existing PCIe card investment or expand it while enjoying the flexibility of adding professional-class video production, transcoding, audio processing, data storage, and high-speed network connectivity to your machine. Instead of buying one or more function-dedicated Thunderbolt interface devices, you can use Mercury Helios 3S like a dock for multiple PCIe cards. Capture incredibly high-quality audio with a PCIe audio card and then retask Helios 3S with a PCIe SSD card to edit and archive tracks. You can swap cards in minutes, adding a new level of flexibility to your workflow. Mercury Helios 3S supports a wide variety of half-length, full-height, single or double-width pro-level PCIe cards from leading brands like AJA, Apogee, ATTO, Avid Pro Tools, Blackmagic Design, CalDigit, HighPoint, Intel, Solid State Logic, Universal Audio, and OWC: Video capture Digital audio Solid State Drive (SSD) 40GbE/10GbE network adapters SAS controllers Firewire, USB, or eSATA host adapters. ## Features - Lightning-fast 40Gbps transfer speeds: (2) Thunderbolt 3 ports - Play your card: physical slot and enclosure support cards up to half-length, full-height, double-width - See more: DisplayPort 1.4 for connecting up to an 8K display - Easy card installs: No tools required - Charge while working: 85W of notebook charging ## Technical Specifications | Specification | Value | |---------------|-------| | Additional Features | Play, Plug | | Asin | B083V3DKCN | | Best Sellers Rank | #82,128 in Computers (See Top 100 in Computers) #5,461 in USB Cables | | Brand | OWC | | Color | Enclosure | | Compatible Devices | Desktops, Laptops | | Customer Reviews | 4.5 4.5 out of 5 stars (73) 4.5 out of 5 stars | | Data Transfer Rate | 40 Gigabits Per Second | | Enclosure Material | Metal | | Hardware Interface | Thunderbolt | | Item Dimensions L X W X H | 14.3L x 14.3W x 8.2H centimeters | | Item Weight | 1.7 Kilograms | | Manufacturer | OWC | | Mfr Part Number | HELIOS3S | | Model Number | OWCHELIOS3S | | Number Of Items | 1 | | Number Of Packs | 1 | | Number Of Ports | 3 | | Operating System | Windows, macOS | | Total Usb Ports | 2 | | Upc | 810586032773 | ## Product Details - **Brand:** OWC - **Colour:** Enclosure - **Hardware interface:** Thunderbolt - **Special features:** Play, Plug - **Compatible devices:** Desktops, Laptops ## Images ![Mercury Helios 3S Thunderbolt 3 PCIe Expansion Solution - Image 1](https://m.media-amazon.com/images/I/51qnp1z4rRL.jpg) ## Available Options This product comes in different **Color** options. ## 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ très bon matériel *by on Reviewed in France 13 December 2023* Reçu rapidement et fonctionne très bien. Ne chauffe pas et prise en charge de la carte vidéo sans problème. Raccordé sur un mini ordinateur sur sa prise thunderbolt 4, tout fonctionne parfaitement. ### ⭐⭐⭐⭐⭐ OWC Mercury Helios 3S *by on Reviewed in Italy 1 March 2023* Arrivato prima del tempo previsto si presenta ottimo qualitativamente ed esteticamente! ### ⭐⭐⭐⭐⭐ Mac mini 2014+OWC Mercury Helios 3Sの組合せでBoot Campで使用 *by on Reviewed in Japan 12 June 2022* 【安定性】Mac mini 2014(intel)で外付けGPUケース(OWC Mercury Helios 3S)と組み合わせて使用しています残念ながら、Mac(OS12.4)ではRadeon RX 6500と6400はサポートしていませんが、Boot Camp(Win10,21H2)では安定して動いています【画質】DELLのFHDモニター(S2721H)を使用していますが、フルHD設定では特に問題ありません【静音性】ベンチマークで高負荷にしない限り、ほとんど無音です。むしろ、Mac mini 本体のシロッコファンの音の方がうるさいです【付属ソフト】TriXXとAMD Softwareでカスタム設定ができるみたいですが、ほとんどデフォルトのままです【その他】試しに、FF15 Benchや3DMark Benchを回してみたところ、快適動作とはいきませんでしたが、それなりに楽しめます ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/388301174-mercury-helios-3s-thunderbolt-3-pcie-expansion-solution](https://www.desertcart.at/products/388301174-mercury-helios-3s-thunderbolt-3-pcie-expansion-solution) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-08-27*