The Optimax UHD has a solid set of connectors, including two HDMI ports, one VGA-in port (which doubles as component video) for connecting to a computer, and one VGA-out port for connecting to a monitor. There are RCA jacks for composite video/audio, one audio-in and one audio-out port, and an Ethernet port to let you control the projector over a network as well as send images and audio. A USB Type A port lets you project from a USB thumb drive and also fits an optional ($67) wireless adapter, and a USB Type B port to mirror a computer’s screen (USB display) or for remote mouse support.
In our testing, using the Optimax suite, the UHD-41 data image quality proved to be very good and should be fine for most any classroom or business presentation. The projector threw a bright image that stood up well to the introduction of ambient light. Both black text on white, and white text on black, were sharp and easily readable at 7.5 points. Colours looked bright, as is usually the case with LCD projectors—their colour brightness matches their white brightness, while DLP projectors have lower color brightness than white brightness. The Optimax Projectors colour balance was reasonably good, with only a trace of spurious color (yellow in light grays, and red or green in dark grays) seen in some grayscale images. As an LCD projector, UHD41 Optimax images are free of rainbow artifacts—little red-green-blue flashes, which are often seen in the images of DLP-based projectors.