--- product_id: 322436148 title: "SONNET TECHNOLOGIES Echo Express SE IIIe Thunderbolt Three-Slot PCIe Card Expansion System" brand: "sonnet" price: "€ 2031.91" currency: EUR in_stock: true reviews_count: 5 category: "Sonnet" url: https://www.desertcart.be/products/322436148-sonnet-technologies-echo-express-se-iiie-thunderbolt-three-slot-pcie store_origin: BE region: Belgium --- # 40 Gbps transfer 3 PCIe slots 15W power delivery SONNET TECHNOLOGIES Echo Express SE IIIe Thunderbolt Three-Slot PCIe Card Expansion System **Brand:** sonnet **Price:** € 2031.91 **Availability:** ✅ In Stock ## Summary > ⚙️ Power Up Your Workflow! ## Quick Answers - **What is this?** SONNET TECHNOLOGIES Echo Express SE IIIe Thunderbolt Three-Slot PCIe Card Expansion System by sonnet - **How much does it cost?** € 2031.91 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/322436148-sonnet-technologies-echo-express-se-iiie-thunderbolt-three-slot-pcie) ## Best For - sonnet enthusiasts ## Why This Product - Trusted sonnet brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unleash Your Power:** Connect up to 3 PCIe cards simultaneously for unparalleled performance. - • **Robust Build Quality:** Crafted from durable metal for long-lasting reliability. - • **Daisy Chain Convenience:** Easily connect multiple devices with a single Thunderbolt 3 port. - • **Versatile Compatibility:** Works seamlessly with both Mac and Windows systems. - • **Lightning-Fast Transfers:** Experience data transfer rates of up to 40 Gbps with Thunderbolt 3 technology. ## Overview The SONNET TECHNOLOGIES Echo Express SE IIIe is a cutting-edge Thunderbolt three-slot PCIe card expansion system designed for professionals who demand high performance. With the ability to connect three PCIe cards simultaneously, it offers lightning-fast data transfer rates of up to 40 Gbps and delivers up to 15W of power to connected peripherals. Its robust metal construction ensures durability, making it the perfect addition to any desktop setup. ## Description Sonnet Echo Express SE III is a compact desktop Thunderbolt 3 to PCIe card expansion system that allows you to connect three professional PCIe cards - including video recording, audio interface, SAS or SATA HBA, 16GB or 8GB Fibre Channel, 10 Gigabit Ethernet and RAID controller - simultaneously to any Mac or Windows computer with Thunderbolt connection. ECHO Express SE III features a 40Gbps Thunderbolt 3 interface, which provides twice the PCIe bandwidth and connectivity of Thunderbolt 2, and delivers up to 2750MB/s of bandwidth, supporting 4K video capture and processing cards at high frame rates as well as 16GB FC cards and dual port 10GB cards with full performance. With the ability to handle multiple demanding, high-performance PCIe cards, support for connecting two displays at 60Hz or a display at 60Hz and support for a variety of Thunderbolt and USB devices, Thunderbolt 3 is a leap forward in every way. Review: I did get DIRTY and USED unit instead of NEW! And without Thunderbolt cable = UNUSABLE!!! - I'm very disappointed - see my attached photo documentation. Unit Sonnet sent me was poorly packed, the card board is broken on many places, but what's most important - instead of new unit they sent me clearly USED one, DIRTY (I tried to clean that up but it's baked into the surface). And included cable is some poor quality USB-C only and NOT THUNDERBOLT cable, that's why I get in macOS message I should connect it to Thunderbolt port. My MacBook Pro M1 MAX has ONLY Thunderbolt ports. Fortunately I have here also dock from Sonnet so I tried the TB cable from the dock and it works. But overall now I have to invest money to TB cable to be able to use this Sonnet box at all, I have dirty unit and very bad feeling. Very sad Sonnet!!! And now I found the second Thunderbolt port for daisy chaining is NOT WORKING AT ALL despite I have Sonnet 10G connected!!! Review: Pretty cool enclosure to expand your laptop connectivity - I’ve been using this for the past couple of months now and I’m pretty happy with it. I spent the first couple of days doing some troubleshooting with it and after some google searching, I discovered that I didn’t have the latest thunderbolt drivers installed as I had previously thought (so make sure you do that and have the latest bios updates as well). After the driver update, everything was working smoothly...well, almost. The function I had the most trouble with was video capture using a PCIe HDMI capture card. The first one I tried was the Elgato HD60 pro, but had a very difficult time trying to capture an input signal. I tried using a similar card by SIIG, but saw identical results. After I did some reading up on the specs for HDMI and Thunderbolt 3, I came to the conclusion that there’s simply not enough bandwidth to accommodate the HDMI input signal, display port output signal and all USB devices when they're connected. Thunderbolt 3 is advertised to have 40Gbits of bandwidth which is theoretical, while the actual bandwidth is at 22Gbits. 8Gbits is given priority allocation to the first connected display which cuts your available bandwidth to 14Gbits to accommodate the rest of your devices. This might be doable with a video capture card using the HDMI 1.4 spec (which uses 14Gbits of bandwidth), but you’d be pushing your luck if you’re driving an external display while trying to record an incoming HD signal simultaneously. The HDMI 2.0 spec allows for bandwidth usage at 18Gbits which makes using a PCIe based video capture card impossible (unless no other devices were connected), so you’re better off using an enclosure you can dedicate a capture card to or get an external one that connects via USB 3. I went with an external one by Mirabox, which gave me the flexibility to use my pen display, audio interface and remaining USB devices while capturing an incoming HD signal. Would I recommend this enclosure? Yes, to anyone who is looking to assemble a custom Thunderbolt dock as I did. ## Features - Additional PCIe power plug for a power-hungry card; "Daisy Chain" Thunderbolt 3 port delivers up to 15W of power for connected peripherals. - Connects three PCIe cards to Thunderbolt 3 ports to any Mac or Windows computer - Use multiple powerful PCIe cards at the same time. - Package Weight: 3.28 kilograms - Package Dimensions: 20.6 L x 41.6 H x 23.0 W (centimeters) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07XHP2D12 | | Antenna Location | Gaming | | Best Sellers Rank | #99,043 in Computers ( See Top 100 in Computers ) #778 in Graphics Cards | | Brand | Sonnet | | Case Type | Desktop | | Case type | Desktop | | Color | Black | | Colour | Black | | Compatible Devices | Servers | | Cooling Method | Air | | Customer Reviews | 4.3 out of 5 stars 42 Reviews | | Enclosure Material | Metal | | Global Trade Identification Number | 00732311012938 | | Hard Disk Form Factor | 3.5 Inches | | Internal Bays Quantity | 3 | | Item Dimensions D x W x H | 20.6D x 23W x 41.6H centimeters | | Item Weight | 3 Kilograms | | Manufacturer | SONNET TECHNOLOGIES | | Material | Metal | | Mfr Part Number | ECHO-EX-SE3E-T3 | | Model Name | SEIIIe | | Model Number | ECHO-EX-SE3E-T3 | | Motherboard compatability | Extended ATX | | Other Special Features of the Product | Advanced power management and multi-card support | | Power Supply Mounting Type | External | | Recommended uses for product | Gaming | | Supported Motherboard | Extended ATX | | UPC | 732311012938 | ## Product Details - **Brand:** Sonnet - **Motherboard compatability:** ATX - **Case type:** Desktop - **Recommended uses for product:** Gaming - **Colour:** Black ## Images ![SONNET TECHNOLOGIES Echo Express SE IIIe Thunderbolt Three-Slot PCIe Card Expansion System - Image 1](https://m.media-amazon.com/images/I/51SSDOrqg4L.jpg) ![SONNET TECHNOLOGIES Echo Express SE IIIe Thunderbolt Three-Slot PCIe Card Expansion System - Image 2](https://m.media-amazon.com/images/I/51MnXzSyWcL.jpg) ![SONNET TECHNOLOGIES Echo Express SE IIIe Thunderbolt Three-Slot PCIe Card Expansion System - Image 3](https://m.media-amazon.com/images/I/61xwbvFMLiL.jpg) ![SONNET TECHNOLOGIES Echo Express SE IIIe Thunderbolt Three-Slot PCIe Card Expansion System - Image 4](https://m.media-amazon.com/images/I/61qfAXErcJL.jpg) ![SONNET TECHNOLOGIES Echo Express SE IIIe Thunderbolt Three-Slot PCIe Card Expansion System - Image 5](https://m.media-amazon.com/images/I/41xH7nqIBLL.jpg) ## Questions & Answers **Q: If i used this for adaptec raid controller, will performance be the same as if installed on the server motherboard?** A: We expect the Adaptec RAID controllers to have an adequate cache to support Thunderbolt performance that is similar to motherboard performance. **Q: Is it possible to use it with pro tools hdn card and aja lhi, with a new macstudio?** A: Hello Michael, The ProTools HDX card does not fit in the Echo Express SEIIIe. You would need an Echo III, which supports the full-length HDX card and works with the M1 Macs. **Q: Will this work with older server class sas/sata raid cards - specifically lsilogic sas9260 or other cards from that generation?** A: You would have to ask the card maker whether their driver is Thunderbolt compatible, which usually means that the driver needs to gracefully handle hot plug/unplug. Drivers that cannot handle hot plug/unplug may still work if you plug/unplug the Thunderbolt chassis from the computer only when the computer is shut down. **Q: Will this work on a Dell PC?** A: Thunderbolt drivers are provided by Intel, so yes, it should work ## Customer Reviews ### ⭐ I did get DIRTY and USED unit instead of NEW! And without Thunderbolt cable = UNUSABLE!!! *by M***T on 10 December 2021* I'm very disappointed - see my attached photo documentation. Unit Sonnet sent me was poorly packed, the card board is broken on many places, but what's most important - instead of new unit they sent me clearly USED one, DIRTY (I tried to clean that up but it's baked into the surface). And included cable is some poor quality USB-C only and NOT THUNDERBOLT cable, that's why I get in macOS message I should connect it to Thunderbolt port. My MacBook Pro M1 MAX has ONLY Thunderbolt ports. Fortunately I have here also dock from Sonnet so I tried the TB cable from the dock and it works. But overall now I have to invest money to TB cable to be able to use this Sonnet box at all, I have dirty unit and very bad feeling. Very sad Sonnet!!! And now I found the second Thunderbolt port for daisy chaining is NOT WORKING AT ALL despite I have Sonnet 10G connected!!! ### ⭐⭐⭐⭐⭐ Pretty cool enclosure to expand your laptop connectivity *by J***T on 11 July 2021* I’ve been using this for the past couple of months now and I’m pretty happy with it. I spent the first couple of days doing some troubleshooting with it and after some google searching, I discovered that I didn’t have the latest thunderbolt drivers installed as I had previously thought (so make sure you do that and have the latest bios updates as well). After the driver update, everything was working smoothly...well, almost. The function I had the most trouble with was video capture using a PCIe HDMI capture card. The first one I tried was the Elgato HD60 pro, but had a very difficult time trying to capture an input signal. I tried using a similar card by SIIG, but saw identical results. After I did some reading up on the specs for HDMI and Thunderbolt 3, I came to the conclusion that there’s simply not enough bandwidth to accommodate the HDMI input signal, display port output signal and all USB devices when they're connected. Thunderbolt 3 is advertised to have 40Gbits of bandwidth which is theoretical, while the actual bandwidth is at 22Gbits. 8Gbits is given priority allocation to the first connected display which cuts your available bandwidth to 14Gbits to accommodate the rest of your devices. This might be doable with a video capture card using the HDMI 1.4 spec (which uses 14Gbits of bandwidth), but you’d be pushing your luck if you’re driving an external display while trying to record an incoming HD signal simultaneously. The HDMI 2.0 spec allows for bandwidth usage at 18Gbits which makes using a PCIe based video capture card impossible (unless no other devices were connected), so you’re better off using an enclosure you can dedicate a capture card to or get an external one that connects via USB 3. I went with an external one by Mirabox, which gave me the flexibility to use my pen display, audio interface and remaining USB devices while capturing an incoming HD signal. Would I recommend this enclosure? Yes, to anyone who is looking to assemble a custom Thunderbolt dock as I did. ### ⭐⭐⭐ Nur beschränkt nutzbar *by T***K on 3 February 2022* Passt nur für Karten mit kürzerer Kontaktleiste (sowieso nur eingeschränkte Länge), daher für mich leider nicht brauchbar. ## Frequently Bought Together - Sonnet Echo Express SEIIIe Thunderbolt 3 Edition (3-Slot PCIe Card Expansion Chassis) - Blackmagic Design DeckLink Duo 2 4ch SDI Playback and Capture Card BMD-BDLKDUO2 - Sonnet Presto Solo 10GBASE-T Ethernet 1-Port PCIe Card [Thunderbolt Compatible] --- ## 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.be/products/322436148-sonnet-technologies-echo-express-se-iiie-thunderbolt-three-slot-pcie](https://www.desertcart.be/products/322436148-sonnet-technologies-echo-express-se-iiie-thunderbolt-three-slot-pcie) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-03*