Use a Low-Profile PCIe Card with Computers Lacking Expansion Slots
Leveraging the power of Thunderbolt technology, Sonnet's compact and easily transportable Echo Express SEL Thunderbolt 2-to-PCIe Card Expansion System enables the connection of one low-profile professional 16Gb or 8Gb Fibre Channel, 10 Gigabit Ethernet, SAS/SATA host bus adapter or RAID controller PCIe card to any Mac® or Windows® PC with a Thunderbolt port.

20 Gbps Thunderbolt 2 Interface
The Echo Express SEL features 20Gbps Thunderbolt 2 which provides ample bandwidth for many of the most demanding, highest performance PCIe cards, and incorporates support for the DisplayPort 1.2 protocol which enables video streaming to a 4K video monitor. While the SEL delivers maximum performance when connected to a computer with Thunderbolt 2 ports, it is also fully compatible with computers with 10Gbps Thunderbolt, supporting most cards at full-performance.

Full Performance in a Small and Light Package
The Echo Express SEL is small, light, and perfect for use in situations where only a single low-profile PCIe card is needed. Measuring a scant 4 inches wide by 8.4 inches long by 2.8 inches tall, the SEL was designed specifically to house one low-profile PCIe card. The SEL’s small size doesn’t limit its performance; installed in this system, a card will perform the same as when installed in an Echo Express SE I, Echo Express SE II, Echo Express III-D, or Echo Express III-R. And like the other Echo Express models, the SEL includes two Thunderbolt ports to support daisy chaining of up to six devices from a single port on your computer.

Smart Design Inside and Out
Constructed of rugged and lightweight aluminum, the outer shell of the Echo Express SEL securely protects the installed PCIe card. The card is protected inside, too. Instead of using a fixed speed fan that may not reliably cool a hot-running card, or a fan with a switch that leaves it up to you to guess the correct speed, the SEL employs a variable-speed, temperature-controlled fan to ensure the card and system's components remain reliably cool. The SEL’s fan automatically speeds up as necessary to cool the installed card when it’s hot, and slows down when it’s cool.

Designed for Low-Profile PCIe Cards
The Echo Express SEL accommodates 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.

Quiet, Please
The Echo Express SEL 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 temperature-controlled, variable speed fan to quietly and efficiently cool the installed card at all times, even during peak operation. The SEL is Sonnet’s quietest expansion system yet.

Strong Link in the Chain
This Sonnet solution supports daisy-chaining of additional Thunderbolt peripherals such as an additional Echo Express system, video capture devices, and data storage devices. For connected devices requiring extra power, 10 watts is provided through the daisy chain port to peripherals.

Thunderbolt Cable and ThunderLok^™ Included
Sonnet includes a Thunderbolt cable to connect the Echo Express SEL to your computer, and a ThunderLok Thunderbolt connector retainer clip to secure the cable to the Echo system.