For connecting modern home-theater gear such as Blu-ray players, audio/video receivers (AVRs), game consoles, and, of course, HDTVs, HDMI is the way to go. Why? Because HDMI (High-Definition Multimedia Interface) can, via a single cable, transport audio, video, and other data signals in pristine digital quality between compatible devices. And with the exploding number of such compatible devices, it's increasingly likely that a person could use an additional HDMI port (or three). The simplest way to have multiple HDMI-enabled devices share a single HDMI port is through the use of a hardware switch. I recommend the Oppo HM-31 Advanced 3x1 HDMI Switch ($99 direct), which proved itself a very capable performer in testing. I also like the fact that the device offers useful extras such as an effective auto-switching feature and additional control options that give it increased flexibility for home theaters.

VIEW ALL PHOTOS IN GALLERY

Inside the HM-31's retail box is the switch itself, as well as a 5V DC adapter, a credit-card–size remote control, and a nine-page user manual—no HDMI cable is included. The switch's glossy black plastic case is about the size of a paperback book at 1.1 by 7.4 by 4.25 inches (HWD), and it weighs 9 ounces. A trio of mounting holes on the bottom of the device can be used to secure the lightweight unit permanently. The face of the HM-31 features a power indicator light and a manual input selection button, as well as a trio of indicator lights that report the current state of each HDMI port. An RS-232 port on the b