Now that Apple has added 802.11ac to its latest MacBook Airs and AirPort Extremes, it’s only a matter of time before the next-generation Wi-Fi standard makes it to the rest of the Mac lineup. Owners of current-generation machines have an option, too: Amped Wireless has just introduced the ACA1 High Power 500mW Dual Band AC Wi-Fi USB Adapter ($90). Large thanks to a couple of brawny antennas, ACA1 adds 802.11ac compatibility to machines without…
