OWC lets you add workstation power to Apple's smallest desktops - Helios 5S expansion means PCI-E finally comes to Thunderbolt 5 Macs

• Helios 5S brings full PCIe expansion to small Apple desktop systems
• The expansion chassis supports full-height PCIe 4.0 x4 cards efficiently
• Users can connect three 8K displays for high-end creative workflows

The move to Thunderbolt 5 has pushed OWC to rethink how external expansion should work for users who depend on small Apple desktops.

In response, OWC has introduced the Helios 5S, a new expansion chassis built to bring true PCI-E functionality to Thunderbolt 5 Macs.

The previous model relied on Thunderbolt 3 and offered only a single PCIe 3.0 slot, which limited how far users could push high-speed cards.