Review on Belkin Mini DisplayPort to HDMI Adapter - 4k Compatibility (Black) by Katie Harris

The device is advertised as 4K compatible but does not support 2560 x 1440 at 60Hz. The maximum resolution available is 1920 x 1080 @ 60 Hz on the Mac Mini (Late 2012). It took a bit of poking around on Belkin's website to find out that this is a passive adapter, in other words it only lets signals through. Another manufacturer's adapter, almost the same price, works fine at 2560x1440 at 60Hz. Sent back for a refund.