Expand your capabilities effortlessly. We understand that you love your sleek Mac or PC, but often wish it offered more functionality. With the OWC Mercury Helios 5S, you can enhance your notebook, small form factor, or all-in-one desktop machine with pro-grade, full-size workstation capabilities. Whether you need ultra-fast storage, 8K video capture, audio DSP, or high-speed networking PCIe cards, the Mercury Helios 5S makes it easy through a single Thunderbolt or USB4 connection, with no tools required. Additionally, with three extra Thunderbolt 5 ports, it serves as a convenient next-gen connectivity hub. Embodying the innovative spirit that has established OWC as a global leader in Thunderbolt solutions, the Mercury Helios 5S effortlessly expands your capabilities, allowing you to think beyond traditional bulky desktop setups for PCIe-based workflows.

Internal class speed: Up to 6000MB/s bandwidth available for simultaneous read/write.

Widely compatible: Use with Thunderbolt 5/4, USB4 Macs and PCs, and Thunderbolt 3 Macs.

Expands small machines: Utilize video capture, high-speed fiber/Ethernet, NVMe RAID, audio I/O, and other cards to unlock the potential of MacBooks, Mac Studio, Mac mini, and other space-constrained computers lacking a PCIe slot.

Whisper quiet: Aircraft-grade aluminum housing with a high-efficiency cooling fan ensures cool, nearly silent operation.

Pro level card ready: (1) PCIe 4.0 x4 (x16 mechanical slot) for half-length, full-height, single or double-width cards.

Easy card installs: Captive thumb screws mean no tools are required.

Expanded connectivity: Three Thunderbolt 5 (USB-C) 80Gb/s ports, each with 15W power delivery for more device, display, and drive possibilities.

Complete and secure: Includes Thunderbolt 5 80Gb/s cable and power cord retainer.