Connect a half-length, full-height, single- or double-width PCIe card to systems with a Thunderbolt 3 port using the Mercury Helios 3S Thunderbolt 3 PCIe Expansion Solution from OWC / Other World Computing. Built with one PCIe 3.0 x16/x4 slot, the Mercury Helios 3S is useful for expanding the connectivity of systems like the iMac, Mac mini, or MacBook Pro, which do not have the PCIe slots needed for pros working in creative fields. Instead, this solution connects to Thunderbolt 3 hosts to leverage this connectivity via PCIe expansion that is outside of the computer. It can be used for video capture, digital audio, an SSD, 40GbE or 10GbE network adapters, SAS controllers, Firewire, USB, or eSATA host adapters, and more.
The Mercury Helios 3S features two 40 Gb/s Thunderbolt 3 ports, one of which is used to connect to your host Windows or Mac system and provides up to 85W of power for device charging. The second Thunderbolt 3 port, which provides up to 15W of power, can be used to daisy-chain up to 5 additional Thunderbolt devices. There is also a DisplayPort 1.4 input that supports connecting up to an 8K display.
Included with this chassis is a Thunderbolt 3 cable, an external power supply, and a power cable. Protection is provided by a limited 3-year warranty.
Please note that the Echo Express SE IIIe does not support GPUs. Also, if the installed PCIe card uses more than 25W of power, plug in the power adapter to your host.