Video output cards
3 Chip Unknown
This video output board is from an unknown manufacturer. I have multiple machines with this board in it.
Microsphere Video
Video Generator
Color Graphics Board
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(Kaypro Connection, Lee F. Ryan and Andrew Townsend)
Ads
MicroSphere Ad for both cards

(Profiles, September 1985)
Described but I haven't seen
Legacy Computer Systems
"External Video Monitor Adapter - Our video monitor adapter allows the attachment of from 1 to 16 external monitors (attached in series) to a KAYPRO computer system. The kits installation reqiures the insertion of a composite video jack through the cooling vents in the rear of the cabinet. The video comes complete with a horizontal sync alignment potentiometer (in case the monitor does not have a horizontal adjustment mechanism. $118."
(Kugram Vol 2, Number 4, Page 16)
JFN AT-1
"JFN Industries of Los Angeles, California, also makes a video enhancement board called the AT-1. The JFN board has a few extra features: reduced intensity; reverse video; blinking; reverse screen (a light background with dark characters); programmable, multiple terminal emulation; and graphic characters."
(The Kaypro Connection, Lee F. Ryan and Andrew Townsend, pg 190)