...
"5v serial": A 5V serial port"audio1": The first audio output"audio2": A second audio output"audio3": A third audio output"brightscript1": BrightScript Version 1"brightscript2": BrightScript Version 2"component video": A component video output"ethernet": An Ethernet interface"FindMemberFunction": The global function of that name is available for use. See the GlobalFunctions page for details."gpio connector": A DA15 or Phoenix-style GPIO port"hdmi": An HDMI output"hdmi input": An HDMI input"hevc_decode": An H.265 video decoder"media_decryption": The ability to decrypt AES-encrypted media, including video, image, and audio files."nand storage": NAND storage for the boot loader and firmware"networking": Any form of networking capability. A False return may indicate that no network is currently available."reset button": A reset button"registry": On-board persistent storage"rtc": A real-time clock (RTC)"sd": SD- or SDHC-compatible storage"sdhc": SDHC-compatible storage only"serial port 0": The first serial port"serial port 1": A second serial port"serial port 2": A third serial port"svc button": A service ("SVC") button. Passing the legacy term"gpio12 button"will yield the same result."usb": One or more USB interfaces"vga": A VGA output"video_encoder": A video encoder/transcoder
...