Following on the heels of mLogic’s mLink, OWC’s Mercury Helios PCIe Thunderbolt Expansion Chassis ($349) has arrived as a less expensive alternative in a slightly less attractive package. They both achieve the same end: any Thunderbolt-equipped Mac can use a half-length PCIe card that was formerly compatible only with the Mac Pro. PCIe cards can be used for everything from flash storage to video capture, enabling Mac Minis and iMacs to…
