Sonnet Echo Express SEL Thunderbolt 3 to Low-Profile PCle Expansion System


Key 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
  • One PCIe 3.0 x8 Slot-Supports low-profile card
  • 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(4)
  • Remarkably Quiet-Temperature-controlled, variable-speed fan automatically and quietly cools the card
  • Energy Saver Mode-Powers on/off automatically with the computer
  • Rugged Aluminum Housing-Provides robust and secure protection
  • Power for Peripherals-Provides up to 15W of power to connected peripheral or host(7)
  • Thunderbolt Cable & ThunderLok Included-Includes 0.5-meter Thunderbolt 3 (40Gbps) cable and ThunderLok 3 Thunderbolt connector retainer clip to secure cable from accidental disconnections
  • Thunderbolt 3 Interface
  • 2 x Thunderbolt 3 (USB Type-C) Ports
  • 1 x PCIe 3.0 x8 Slot
  • Supports Low-Profile PCI Cards
  • Temperature-Controlled Fan
  • Thunderbolt Cable and ThunderLok Included

Expansion Slots 1 x PCIe 3.0 x8 (x4 mode)
Supported PCI Card Sizes Half-Height (Low-Profile)
Maximum GPU Length 6.6" / 16.8 cm
Ports 2 x Mini DisplayPort Thunderbolt 2
Operating System Support Windows, macOS/OS X
Power Source Type 60 W External Adapter
AC Input Power 100 to 240 VAC, 50 / 60Hz
Operating Temperature 32 to 95F / 0 to 35 C
Certifications RoHS, as per Manufacturer
Dimensions 4.0 x 8.3 x 2.8" / 10.2 x 21.1 x 7.1cm
Weight 1.9lb / 0.8kg

The Echo Express SEL Thunderbolt 3 to Low-Profile PCIe Card Expansion System from Sonnetprovides a PCIe 3.0 x8 slot for Thunderbolt 3-equipped notebooks, SFF desktop systems, and other computers without a PCIe slot. The Echo Express SEL supports low-profile PCIe cards with a length of up to 6.6", such as audio interface, SAS or SATA HBA, 16Gb or 8Gb Fibre Channel, 10Gb Ethernet, or RAID controller PCIe cards, which operate over the Thunderbolt connection. There's also an integrated variable-speed fan for cooling your PCI card and the SE's internal components.

The Echo Express SEL Thunderbolt 3 Expansion System comes with two Thunderbolt 3 ports, letting you daisy chain up to six Thunderbolt devices to your computer. Each of the two Thunderbolt 3 ports transmits data at a rate of up to 40 Gbps and offers a USB Type-C design, so you can connect the included 1.6' Thunderbolt 3 cable on the first try. Moreover, a ThunderLok 3 Thunderbolt connector retainer clip is supplied to help ensure the cable stays connected to the chassis.

Small Package, Full Performance
Measuring just 4" wide by 8.4" long by 2.8" tall, the Echo Express SEL - Thunderbolt 3 Edition is suitable 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 compatible, including a BlueFish 444 Epoch 4K Neutron video card.
Thunderbolt 3 Technology
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 SE I comes with USB 3.1 (10 Gbps) support, meaning you can connect a USB device to the second port using a proper cable or adapter. The SE I also provides full support for connecting two 4K displays @ 60 Hz or one 5K display @ 60 Hz. For connected devices requiring extra power, 15 watts is provided to connected bus-powered devices.
Smart Design
The Echo Express SEL - Thunderbolt 3 Edition's lightweight, yet rugged aluminum outer shell securely protects the installed PCIe card. Inside, the card is protected with a variable-speed, temperature-controlled fan, which ensures that the card and SE I's internal components remain reliably cool. The fan automatically speeds up as necessary to cool the optional PCIe card when it's hot, and slows down when it's cool. Since Echo Express products automatically power on and off with your computer, there is no power switch on the chassis, ensuring you don't waste energy by forgetting to turn it off.
Designed to accommodate cards up to 6.6" long, the Echo Express SEL - Thunderbolt 3 Edition supports most low-profile, single-width PCIe 3.0, PCIe 2.0, and PCIe 1.1 cards, which are compatible over a Thunderbolt connection.
Quiet Cooling
The Echo Express SEL is designed to be 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 temperature-controlled, variable speed fan to quietly and efficiently cool the PCIe card at all times.
Thunderbolt Cable and ThunderLok Included
To connect the Echo Express SEL - Thunderbolt 3 Edition to your computer, Sonnet includes a 1.6' (0.5m) Thunderbolt 3 (40 Gbps) cable and a Sonnet ThunderLok 3 Thunderbolt connector retainer clip to secure the cable to the Echo chassis. Accidental cable disconnection can lead to data loss. Sonnet's ThunderLok 3 is easy to install and use-just slide it over one end of the cable and then plug in the connector and secure it to the chassis by turning a thumbscrew.
Storage2TB (4 x 500GB)
Noise CancelingYes
Size and Weight
Dimensions4.0 x 8.3 x 2.8" 10.2 x 21.1 x 7.1cm
In the Box
Box Contents
Sonnet Echo Express SEL Thunderbolt 3 to Low-Profile PCIe Card Expansion System
  • Universal Power Adapter
  • Power Cord
  • 1.6' (0.5m) Thunderbolt 3 Cable
  • ThunderLok 3 Thunderbolt Connector Retainer Clip
  • Limited 1-Year Warranty
Lock SlotYes
Form FactorDesktop
Beamforming SupportYes
WarrantyLimited 1-Year Warranty
CertificationsRoHS, as per Manufacturer


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