All the NEC (NL---AC---) pannels, have analog inputs. There are 2 major types:
1) With a Built in VGA Controller, so you can use them directly.
2) Without a bulit-in VGA Controller, so you need to buy one SPECIALLY DESIGNED for NEC pannels
By experience the part numbers that ends with L or A (NL10276AC28-02A) have the controller.
If the seller has a photo of the screen, and there are 3 PCB, including the inverter, the middle one is the controller. If there is no middle PCB, you will need one to drive the screen.