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Sonnet Technologies Echo Express SE I Single PCIe Slot, Thunderbolt 3 Expansion Chassis Certified Open Box , $368.09 - Add to Cart Skip to Product Information

Sonnet Technologies Echo Express SE I Single PCIe Slot, Thunderbolt 3 Expansion Chassis Certified Open Box

Thunderbolt 3 Expansion Chassis with Single PCIe Slot - macOS/Windows
Item ID: EchoExpSE1TB3d2
Sonnet Technologies Echo Express SE I Single PCIe Slot, Thunderbolt 3 Expansion Chassis

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Sonnet Technologies Echo Express SE I Single PCIe Slot, Thunderbolt 3 Expansion Chassis Certified Open Box

Certified Open Box Savings!

Save $1.90 What is Certified Open Box?

The price below reflects your savings.

$ 368 .09
Savings: $1.90 New for $369.99

Use a PCIe Card with Any Thunderbolt 3-equipped Computer

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Fewer and fewer new computers are being loaded with PCIe card slots. If that's what's keeping you from upgrading, you're in luck. The Echo Express SE I from Sonnet Technologies allows you to connect a single PCIe card to nearly any Thunderbolt 3-equipped Mac or PC. For example: use your UAD-2 card with a laptop. With speeds up to 2,750 MB/s, high-resolution multichannel audio is no problem for this expansion chassis. It even supports 4K video capture! The Echo Express SE I provides up to 15 watts of power to your peripherals and features a rugged aluminum housing.

Nearly every Thunderbolt 3-compatible PCIe card is supported

The Echo Express SE I supports cards from Apogee, Avid, Focusrite, Lynx, RME, SSL, Universal Audio, and more. It features an x8 PCIe slot and supports half-length+, full-height, single-width PCIe cards. And if you've got a double-width card like an RME HDSPe MADI FX, this chassis also includes space for a daughter card.

Expand your system with Thunderbolt 3

The Sonnet Technologies Echo Express SE I features two Thunderbolt 3 ports. The first connects to your computer. The second is reserved for daisy-chaining up to five additional Thunderbolt devices to your computer. 10Gbps USB 3.1 Gen 2 support allows you to connect a USB device. You can also connect a pair of 4K displays or a single 5K display. The Echo Express SE I also provides up to 15 watts of power to your bus-powered peripherals.

Connect your computer to one port on the Echo Express SE I and daisy chain up to 5 additional Thunderbolt devices (plus two 4K monitors, one 5K display, or one USB 3.0 device).

Well-thought-out design that's built to last

The Echo Express SE I boasts a well-thought-out design. Your PCIe card is well protected by a lightweight yet rugged aluminum shell, and a temperature-controlled fan keeps your card from overheating. Its variable-speed motor speeds up when things get hot and slows down when things get cool. The Echo Express SE I also saves energy by powering on and off with your computer.

Mac Compatibility

  • MacBook Pro (15-inch, Late 2016)
  • MacBook Pro (13-inch, Late 2016, 4 Thunderbolt 3 ports)
  • MacBook Pro (13-inch, Late 2016, 2 Thunderbolt 3 ports)
  • Mac with Thunderbolt or Thunderbolt 2 ports and Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter
  • MacOS 10.12.1+

PC Compatibility

  • PC with a Thunderbolt 3 port
  • Windows 10, 8, 7

Your PC may require updates to insure that the Thunderbolt 3 ports function properly.

PCIe Card Compatibility

For up-to-date PCIe card compatibility click here.

Sonnet Technologies Echo Express SE I Features:

  • Thunderbolt 3 expansion chassis with single PCIe slot
  • Connect a single PCIe card to nearly any Thunderbolt 3-equipped Mac or PC
  • x8 PCIe slot accommodates half-length+, full-height, single- and double-width PCIe cards
  • Speeds up to 2,750 MB/s are tailor-made for high-resolution multichannel audio and 4K video capture
  • Daisy-chain up to 5 additional Thunderbolt devices, plus a pair of 4K displays (or a single 5K display) and a USB device
  • Provides up to 15 watts of power to your peripherals
  • Temperature-controlled variable-speed fan and auto power on/off function save energy
  • Rugged aluminum housing protects your card from damage
  • Thunderbolt 3 (40Gbps) cable and ThunderLok 3 are included
What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.