How much power the device consumes when it's switched on.
JVC DLA-X30: 0.8W
17. power consumption on standby
How much power the device consumes when shut down but still plugged in.
Panasonic PT-AE8000U: 0.08W
18. USB ports
With more USB ports, you are able to connect more devices.
Optoma UHD51A: 4
19. contrast ratio
Contrast ratio is the visual distance between the lightest and the darkest colors that may be reproduced on the display. A high contrast ratio is desired, resulting in richer dark colors and more distinctive color gradation.
Epson PowerLite Pro Cinema 6030UB: 600000:1
20. has a HDMI output
Devices with a HDMI or mini HDMI port can transfer high definition video and audio to a display.
Epson PowerLite 420 XGA
84% have it
21. composite ports
The more composite ports a device has, the more devices can be simultaneously connected, such as video game consoles and set-top boxes.
NEC NC1200C: 4
22. component ports
The more component ports a device has, the more devices can be simultaneously connected, such as video game consoles and set-top boxes.