The Mercury Helios 3 Thunderbolt 3 PCIe Expansion Chassis from OWC / Other World Computing lets users connect PCIe expansion cards to their host system using Thunderbolt 3. Thunderbolt 3 provides bi-direction data transfer speeds of up to 40 Gb/s, which can drive peripherals made for video production, transcoding, audio processing, data storage, and more.
This enclosure has one PCIe 3.0 slot which runs at x4 but can accept cards up to x16. Supported form factors include half-height cards up to 7.75", as well as full-height and double-width cards. It interfaces with your host system using one Thunderbolt 3 port, while a second Thunderbolt 3 port can be used to daisy-chain an additional five compatible Thunderbolt 3 peripherals and deliver a minimum of 25W of power. Also supported is a dual-display configuration via Thunderbolt 3 and separate mini DisplayPort output. The Mercury Helios 3 can drive one display up to 4K at 60 Hz or two 1080p displays at 60 Hz.
Compatible systems include the Mac mini, MacBook Pro, iMac Pro, iMac, and MacBook Air running macOS 10.12.1 or later, as well as Intel/AMD-based systems running Windows 10 or later. Windows 10 is also supported under Boot Camp. Included is a 1.6' Thunderbolt 3 cable, an auto-switching power supply, and a power cable. Protection is provided by a limited 3-year warranty.
Please note that graphics cards, OWC Mercury Accelsior Pro Q SSDs, and OWC's 2-port Jupiter mini-SAS PCIe HBA Card are not supported.