--- product_id: 39523416 title: "Echo Express SEL TB3" brand: "sonnet" price: "€ 695.98" currency: EUR in_stock: true url: https://www.desertcart.pt/products/39523416-echo-express-sel-tb3 store_origin: PT region: Portugal --- # 40Gbps Thunderbolt 3 speed Compact low-profile design Daisy-chain up to 5 devices Echo Express SEL TB3 **Brand:** sonnet **Price:** € 695.98 **Availability:** ✅ In Stock ## Summary > ⚡ Unlock PCIe power anywhere — compact, fast, and future-ready! ## Quick Answers - **What is this?** Echo Express SEL TB3 by sonnet - **How much does it cost?** € 695.98 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/39523416-echo-express-sel-tb3) ## 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 - • **Universal Compatibility:** Works flawlessly with any Mac or Windows PC featuring Thunderbolt 3, unlocking PCIe expansion possibilities without internal slots. - • **Compact Powerhouse Design:** Smallest Thunderbolt 3-to-PCIe expansion chassis that fits low-profile cards without compromising full performance—perfect for sleek workspaces. - • **Secure & Ready Out of the Box:** Includes a premium 0.7m Thunderbolt 3 cable and ThunderLok connector clip to prevent accidental disconnections during intense workflows. - • **Effortless Multi-Device Connectivity:** Dual Thunderbolt 3 ports enable daisy-chaining up to five devices or connecting multiple 4K/5K displays, maximizing your productivity setup. - • **Blazing 40Gbps Thunderbolt 3 Interface:** Experience ultra-fast 2750 MB/s PCIe bandwidth that doubles Thunderbolt 2 performance for seamless high-speed data transfer. ## Overview The Sonnet Echo Express SEL is a portable Thunderbolt 3-to-PCIe expansion chassis designed for low-profile PCIe cards. Delivering 40Gbps bandwidth and 2750 MB/s data transfer speeds, it supports Mac and Windows PCs without internal PCIe slots. Featuring dual Thunderbolt 3 ports for daisy-chaining multiple devices and secure cable retention, it’s the smallest full-performance expansion system ideal for professionals demanding high-speed connectivity in a compact form. ## Description Buy Sonnet Echo Express SEL Thunderbolt 3-to-PCIe Expansion Chassis (1 Low Profile Slot): Network Cards - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Connects a PCIe Expansion Card to Computers Without Slots—Use high-performance PCIe cards with any Mac or Windows PC with a Thunderbolt 3 port (Low Profile Card only) - 40Gbps Thunderbolt 3 Interface—Offers 2750 MB/s of PCIe bandwidth, doubling the performance of Thunderbolt 2 - Small Package, Full Performance—Smallest Thunderbolt 3-to-PCIe card expansion system available, supports the most popular low-profile, Thunderbolt-compatible PCIe cards at full performance - Two Thunderbolt 3 (USB-C) Ports—One port reserved for connection to the computer; second port supports daisy-chaining of up to five additional Thunderbolt(5) devices to your computer, attaching a single USB(6) peripheral device, or connecting up to two 4K displays or one 5K display - Thunderbolt Cable & ThunderLok Included—Includes 0.7-meter Thunderbolt 3 (40Gbps) cable and ThunderLok 3 Thunderbolt connector retainer clip to secure cable from accidental disconnections ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N21UTFN | | Additional Features | Portable | | Best Sellers Rank | #801 in Internal Computer Networking Cards | | Brand | Sonnet | | Built-In Media | Sonnet Echo Express SEL 1-Slot Thunderbolt 3 to Low-Profile PCIe Card Expansion | | Cache Memory Installed Size | 40 | | Color | Clear | | Compatible Devices | Laptop, Desktop | | Connectivity Technology | Thunderbolt | | Customer Package Type | Standard Packaging | | Customer Reviews | 4.1 4.1 out of 5 stars (32) | | Data Transfer Rate | 40 gigabits_per_second | | Digital Storage Capacity | 16 GB | | Form Factor | Low-profile | | Global Trade Identification Number | 00732311012044 | | Hard Disk Description | Mechanical Hard Disk | | Hard Disk Form Factor | 3.5 inches | | Hard Disk Interface | Thunderbolt 3 | | Hardware Connectivity | Thunderbolt 3 | | Installation Type | External Hard Drive | | Item Weight | 3.4 pounds | | Manufacturer | SONNETTECH | | Media Speed | 2750 MB/s | | Mfr Part Number | ECHO-EXP-SEL-T3 | | Model Name | SoNNeT Echo Express SEL Thunderbolt 3-to-PCIe Expansion Chassis (1 low profile slot) | | Model Number | ECHO-EXP-SEL-T3 | | Number of Items | 1 | | Read Speed | 2750 megabytes_per_second | | UPC | 732311012044 | | Unit Count | 1 Count | | Warranty Description | 1 Year Limited Warranty | ## Product Details - **Brand:** Sonnet - **Color:** Clear - **Compatible Devices:** Laptop, Desktop - **Connectivity Technology:** Thunderbolt - **Digital Storage Capacity:** 16 GB - **Hard Disk Description:** Mechanical Hard Disk - **Hard Disk Form Factor:** 3.5 inches - **Hard Disk Interface:** Thunderbolt 3 - **Installation Type:** External Hard Drive - **Special Feature:** Portable ## Images ![Echo Express SEL TB3 - Image 1](https://m.media-amazon.com/images/I/61BjyJYLJrL.jpg) ## Questions & Answers **Q: Can you use this with a graphics card?** A: Hello there, This product is not meant to be used with a graphics card. Please check out the Sonnet eGFX Breakaway Box **Q: Will this work with an intel 750 pcie ssd? aic or 2.5 form factor? will that work on a 2017 macbook pro?** A: The Intel 750 PCIe SSD that is NVME will not be supported under Mac OS Sierra, but will work on Windows. Whether the card works or not is dependent on the Operating System and not our product. The 2.5" form factor should work on either Mac or Windows. **Q: Any ideas on using this with wndows laptop w/ tbolt 3 to add a m.2 nvme ssd (samsung 960 evo, etcj ? an adapter card perhaps for internal slot?** A: This product is compatible with thunderbolt 3 windows laptops. So as long as the PCIe card is thunderbolt compatible it will work. We also offer an all in one bus powered solution called the Fusion Flash Drive: https://www.amazon.com/dp/B076HZHP1R **Q: Hi would like to buy this product and use it with a magewell quad sdi capture and connect it to my laptop: https://www.amazon.com/dp/b01mr67wby/ref=c** A: The SEL will only support a half-height, half-length PCIe card, so that card physically will not fit in the SEL So the next question is will it work in a chassis like the Sonnet Echo SE I, that does have enough room for the card. Unfortunately, we don’t know if that card is compatible over Thunderbolt or not. In a hardware sense the card would most-likely be detected, but the main issue is if Magewell has ungraded their drivers to be compatible over Thunderbolt. For that you would need to contact them directly to see if their card is certified for Thunderbolt or not. ## Frequently Bought Together - Sonnet Echo Express SEL Thunderbolt 3-to-PCIe Expansion Chassis (1 Low Profile Slot) - Blackmagic Design DeckLink Duo 2 4ch SDI Playback and Capture Card BMD-BDLKDUO2 --- ## 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.pt/products/39523416-echo-express-sel-tb3](https://www.desertcart.pt/products/39523416-echo-express-sel-tb3) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-27*