Plantronics Colorplus

The Plantronics Colorplus is a graphics card for IBM PC computers, first sold in 1982.

[4] It uses the same Motorola MC6845 display controller as the previous MDA and CGA adapters.

This offered greater clarity on RGB monitors, versus the default "thick" / 2-pixel font more suitable for output to composite monitors and over RF to televisions but, contrary to Plantronics' advertising claims, was drawn at the same 8 × 8 pixel resolution.

Few software made use of the enhanced Plantronics modes, for which there was no BIOS support.

The Thomson TO16 (a PC-XT compatible)[11] and the Olivetti M19 supported Plantronics modes,[12] along with CGA.

Plantronics 320 × 200 with 16 colors graphics resolution, corrected for aspect ratio
Plantronics 640 × 200 with 4 colors graphics resolution, corrected for aspect ratio