A vga to hdmi converter is used to connect older vga-output devices (like laptops or desktops) to hdmi-input displays (like tvs or monitors).
general specifications:
1. input port: vga (15-pin d-sub)
2. output port: hdmi (type a)
3. audio input (optional): 3.5mm stereo jack (since vga doesn't carry audio)
4. power supply (optional): usb (5v) or external adapter (for active converters)
video support:
input resolution (vga): 640x480 up to 1920x1080 (full hd)
output resolution (hdmi): up to 1080p @ 60hz
audio support (if included):
supports 2-channel stereo audio
audio gets embedded into hdmi signal
conversion type:
active conversion: converts analog vga to digital hdmi
chipset: may include converters like ch7101, ms9282, etc.
build/design:
compact plastic or metal case
cable-integrated or box-style