If i used this for adaptec raid controller, will performance be the same as if installed on the server motherboard?

We expect the Adaptec RAID controllers to have an adequate cache to support Thunderbolt performance that is similar to motherboard performance.

Is it possible to use it with pro tools hdn card and aja lhi, with a new macstudio?

Hello Michael, The ProTools HDX card does not fit in the Echo Express SEIIIe. You would need an Echo III, which supports the full-length HDX card and works with the M1 Macs.

Will this work with older server class sas/sata raid cards - specifically lsilogic sas9260 or other cards from that generation?

You would have to ask the card maker whether their driver is Thunderbolt compatible, which usually means that the driver needs to gracefully handle hot plug/unplug. Drivers that cannot handle hot plug/unplug may still work if you plug/unplug the Thunderbolt chassis from the computer only when the computer is shut down.

Will this work on a Dell PC?

Thunderbolt drivers are provided by Intel, so yes, it should work

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Sonnet Echo Express SEIIIe Thunderbolt 3 Edition (3-Slot PCIe Card Expansion Chassis)

Product ID: 159133997

Details

Brand
Sonnet
Case Type
Desktop
Color
Black
Cooling Method
Air
Item Weight
3 kg
Material
Metal

⚡40Gbps Thunderbolt 3 speed

🔌Supports full-height, half-length cards up to 7.75"

🖥️3 PCIe 3.0 slots for pro-grade expansion

$1911.64

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Description

⚡ Power Your Pro Setup with Triple PCIe Thunderbolt Speed!

PEACE OF MIND INCLUDED - Backed by a 2-year warranty and free lifetime customer support since 1986 — because your workflow deserves reliability.
PLUG PLAY SIMPLICITY - Two Thunderbolt 3 USB-C ports ensure effortless daisy-chaining and instant connectivity with your MacBook Pro or desktop.
UNLEASH TRIPLE PC IE POWER - Expand your Mac’s capabilities with three high-performance PCIe 3.0 slots, perfect for graphics, storage, and more.
BUILT TO LAST WITH PREMIUM ALUMINUM - Durable, sleek black aluminum chassis designed for professional setups and optimal cooling via air circulation.
BLAZING FAST THUNDERBOLT 3 INTERFACE - Experience up to 40Gbps bandwidth, doubling Thunderbolt 2 speeds for seamless data flow and ultra-low latency.

The Sonnet Echo Express SEIIIe Thunderbolt 3 Edition is a robust 3-slot PCIe expansion chassis designed for Macs with Thunderbolt 3 ports. It supports three full-height, half-length PCIe 3.0 cards, delivering up to 40Gbps bandwidth for high-performance workflows. Featuring a durable aluminum case, dual Thunderbolt 3 ports for daisy-chaining, and backed by a 2-year warranty with lifetime support, it’s the ultimate upgrade for creative professionals and power users seeking seamless expansion and speed.

Specifications

ASIN	B07XHP2D12
Antenna Location	Gaming
Best Sellers Rank	#673 in Computer Graphics Cards
Brand	Sonnet
Case Type	Desktop
Color	Black
Compatible Devices	Personal Computer, Mackbook Pro,
Cooling Method	Air
Customer Reviews	4.2 4.2 out of 5 stars (47)
Enclosure Material	Metal
Global Trade Identification Number	00732311012938
Hard Disk Form Factor	3.5 inches
Internal Bays Quantity	3
Item Dimensions D x W x H	8.11"D x 9.06"W x 16.38"H
Item Weight	3 kg
Manufacturer	Sonnet Technologies
Mfr Part Number	ECHO-EX-SE3E-T3
Model Name	SEIIIe
Model Number	ECHO-EX-SE3E-T3
Other Special Features of the Product	Temperature-Controlled Fan and Auxiliary Power Connector
Power Supply Mounting Type	External
Supported Motherboard	Extended ATX
UPC	732311012938

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