oukecnc
https://www.oukecnc.com/products/original-a06b-6079-h206-servo-amplifier-module-fanuc-drive.html
The FANUC a06b 6079 h206 is a 2-axis servo amplifier module. Its standard dimensions are 380 x 60 x 307 mm. Servo amplifier is a kind of controller used to control servo motor, its role is similar to the frequency converter acting on ordinary AC motor, is part of the servo system, mainly used in high-precision positioning system.