What is the OWC Mercury Helios 3S?

It is a Thunderbolt 3 PCIe Expansion Solution manufactured by OWC for computer systems.

What factors affect its resale value?

Resale value is determined by the item's condition, completeness, and edition.

Builders and professionals who need extra expansion capabilities for their computers are interested in this product.

Computers

OWC Mercury Helios 3S Thunderbolt 3 PCIe Expansion Solution value — New 229,73 € · $264.99. Prices updated Juli 2026.

Used

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New / Sealed

229,73 € · $264.99

Live on eBay now

Converted from USD at the ECB reference rate — sold comps are US-market sales.

The OWC Mercury Helios 3S is a Thunderbolt 3 PCIe Expansion Solution designed for computer users.

This accessory is sought after by builders and professionals requiring additional expansion capabilities for their systems.

Its resale value is influenced by the unit's condition, whether it is complete, and its specific edition.

What this actually trades for — sold values by condition vs. what sellers are asking today

Condition	Value	Based on
New / Sealed	229,73 € · $264.99	eBay sold comps

What is the OWC Mercury Helios 3S?: It is a Thunderbolt 3 PCIe Expansion Solution manufactured by OWC for computer systems.
What factors affect its resale value?: Resale value is determined by the item's condition, completeness, and edition.
Who typically purchases this item?: Builders and professionals who need extra expansion capabilities for their computers are interested in this product.