According to my notes, the first video card produced by Lapis was the SE DisplayServer. It was a dual mode card (digital/TTL EGA AND analog VGA/SVGA) initially but Lapis developed it for other analog monitors, probably dropping digital/TTL support at some point. Mac Plus versions (clip-on) were also produced.
When the Mac Classic arrived, Lapis produced an analog graphics card with RAM expansion. This model was also sold by Computer Care.
The Portable board being discussed seems to be an intermediary member of the family. Hopefully, drivers will be found on the more numerous support disks for other DisplayServers.
The DisplayServer II cards (NuBus) were also unconventional. A 9 pin D connector was provided for TTL monitors and/or an HD-15 connector for all analog monitors (an adapter was required for the Apple D15 connector). The DisplayServer II-DPD-TV was designed to work with NTSC TVs.
Edited to correct "When the Mac Classic arrived" for Mac Plus