The GAEA-C phase only Spatial Light Modulator (SLM) consists of a driver unit with standard digital video interface (HDMI) and a phase only LCOS (Liquid Crystal on Silicon) microdisplay with 4094 x 2400 pixel resolution and 3.74 µm pixel pitch leading to an active area diagonal of 0.7”. The GAEA-C is a plug & play phase modulator device and can be addressed with phase functions via standard graphics cards as an extended monitor device. 8 bit gray level patterns (= 8 bit phase levels) can be addressed. Addressing can be done using the supplied Pattern Generator software, the SLM Slideshow Player software or standard image viewer software. HOLOEYE also provides an SLM Display Software Development Kit (SDK) which provides APIs for different programming languages. The very small pixel size of the GAEA-C SLM display enables high diffraction angles.