Spread Spectrum Clocking is a way to lower electromagnetic interference or EMI. This is important for storage solutions that are required to pass FCC and other agency certifications. All current Serial ATA disk drives implement SSC (some allow you to turn this feature on/off). However, some older SATA drives do not implement SSC. All Sonnet Serial ATA host adapter cards support SSC but will also work with disk drives that do not.
The Echo ExpressCard/34 Thunderbolt adapter requires Mac OS 10.6.8 or later and supports cards with Thunderbolt technology-aware drivers. Download and install the latest driver to make your card compatible:
Note: Sonnet FireWire 800 Pro ExpressCard/34, and FireWire/USB ExpressCard/34 cards are compatible without additional drivers. For third-party products listed as compatible, please visit those manufacturer's Websites to get the latest, Thunderbolt technology-aware drivers.
