Key Features

• Connects a PCIe Expansion Card to Computers Without SlotsUse high-performance PCIe cards with any Mac or Windows PC with a Thunderbolt 3 port
• One PCIe 3.0 x8 SlotSupports low-profile card
• 40Gbps Thunderbolt 3 InterfaceOffers 2750 MB/s of PCIe bandwidth, doubling the performance of Thunderbolt 2
• Small Package, Full PerformanceSmallest 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) PortsOne 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(4)
• Remarkably QuietTemperature-controlled, variable-speed fan automatically and quietly cools the card
• Energy Saver ModePowers on/off automatically with the computer
• Rugged Aluminum HousingProvides robust and secure protection
• Power for PeripheralsProvides up to 15W of power to connected peripheral or host(7)
• Thunderbolt Cable and ThunderLok IncludedIncludes 0.5-meter Thunderbolt 3 (40Gbps) cable and ThunderLok 3 Thunderbolt connector retainer clip to secure cable from accidental disconnections

Connect a Low-Profile PCIe Card to Computers Without Expansion Slots
Shopping for a new computer? Small and thin is inthe latest ultra-light notebooks, small form factor, and all-in-one desktops are slender marvels of engineering. But, thinness comes with a costtheres nowhere to install PCIe cards that provide additional connectivity and processing capabilities beyond a computers standard ports. Thin Mac and Windows(1) computers with Thunderbolt 3 ports still offer tremendous processing power, but for many, such as pros in the creative fields, onboard processing power alone is not enough. Fortunately, you dont have to limit your choices to desktop workstationsthink external. Sonnets Echo Express SEL - Thunderbolt 3 Edition enables you to connect a single low-profile PCIe card outside of the computer. Through its x8 PCIe 3.0 slot, this little Thunderbolt 3-to-PCIe card expansion chassis supports many Thunderbolt-compatible 16Gb and 8Gb Fibre Channel, 40Gb and 10 Gigabit Ethernet, video capture and processing, SAS and SATA host bus adapters, and RAID controller cards.

The Echo Express SEL - Thunderbolt 3 Edition features 40Gbps Thunderbolt 3, which offers double the speed and connectivity of Thunderbolt 2, and yields up to 2750 MB/s of PCIe bandwidth, enabling it to support 4K video capture and processing cards at high frame rates, and 16Gb FC cards and dual-port 10GbE cards at full performance(2)(3). With the ability to handle the most demanding, highest performance PCIe cards, support for connecting two 4K displays @ 60Hz or one 5K display @ 60Hz(4), and support for a vast array of Thunderbolt(5) and USB(6) peripheral devices, Thunderbolt 3 is a leap forward in every way.

Small Package, Full Performance
Measuring just 4 inches wide by 8.4 inches long by 2.8 inches tall, the Echo Express SEL - Thunderbolt 3 Edition is ideal for use in circumstances where connecting a single low-profile PCIe card is required. Many of the most popular Thunderbolt-compatible high-speed networking and storage controller cards are a perfect fit, and even the BlueFish 444 Epoch 4K Neutron video card can be accommodated.

Thunderbolt 3 The USB C That Does It All
The Echo Express SEL - Thunderbolt 3 Edition includes two Thunderbolt 3 (USB-C) ports; the first connects it to your computer, while the second supports daisy chaining of up to five additional Thunderbolt peripheral devices to a single port on your computer. The SEL includes 10Gbps USB 3.1 Gen 2 support, meaning you can connect a USB device to the second port using the proper cable or adapter. The SEL also provides full support for connecting two 4K displays @ 60Hz or one 5K display @ 60Hz(4). For connected devices requiring extra power, 15 watts is provided to connected bus-powered devices(7).

Smart Design, Inside and Out
Aluminum and Auto Power IconsConstructed of rugged and lightweight aluminum, the outer shell of the Echo Express SEL - Thunderbolt 3 Edition securely protects the installed PCIe card. The card is protected inside, toothe Echo SEL employs a variable-speed, temperature-controlled fan to ensure the card and chassis components remain reliably cool. The fan automatically speeds up as necessary to cool the installed card when its hot, and slows down when its cool. Since Echo Express products automatically power on and off with your computer, there is no power switch on the chassis, ensuring you dont waste energy by forgetting to turn it off.

Quiet, Please
Ultra Quite Fan IconThe Echo Express SEL - Thunderbolt 3 Edition was designed to be ultra-quiet so that it can be comfortably used in noise-sensitive environments. The airflow path within the chassis has been specially designed to enable the fan to quietly and efficiently cool the installed card at all times, even during peak operation.

Designed for Low-Profile PCIe Cards
The Echo Express SEL - Thunderbolt 3 Edition supports one half-length (up to 6.6 inches long), low-profile, single-width PCIe card; PCIe 1.1, PCIe 2.0 and PCIe 3.0 cards are supported.

Do you have a card in mind but arent sure its compatible? Weve worked closely with PCIe card manufacturers to provide a list of compatible cards on our supporting PCIe Card Thunderbolt Compatibility Chart. The chart provides a list of cards that have been tested to be recognized over a Thunderbolt connection and compatible with Thunderbolt technology requirements.

Thunderbolt 3 (40Gbps) Cable and ThunderLok 3 Included
Sonnet includes a 0.5-meter Thunderbolt 3 cable to connect the Echo Express SEL - Thunderbolt 3 Edition to your computer, and a Sonnet ThunderLok 3 Thunderbolt connector retainer clip(8) to secure the cable to the Echo chassis. Accidental cable disconnect can lead to data loss. Sonnets ThunderLok 3 secures the Thunderbolt cable to the Echo chassis, and is easy to install and usejust slide it over one end of the cable, and then plug in the connector and secure it to the chassis by turning a thumbscrew. Because of its unique design, ThunderLok does not attach to the connector, but remains on the cable so it wont get lost when not in use.