![Screen Shot 2021-02-21 at 9.41.51 PM Screen Shot 2021-02-21 at 9.41.51 PM](https://gevanwert.com/wp-content/uploads/2021/02/Screen-Shot-2021-02-21-at-9.41.51-PM.png)
The ST Optical Compartor :
Has 2 Acu-rite Round connector,6-pin
![Screen Shot 2021-02-21 at 9.43.47 PM Screen Shot 2021-02-21 at 9.43.47 PM](https://gevanwert.com/wp-content/uploads/2021/02/Screen-Shot-2021-02-21-at-9.43.47-PM.png)
You will need Retrokit # MX2-ARXY-AM:
MX200 DRO with Bendix (6pin) XY scales with Arm Mount
(Jumpers included)
![Screen Shot 2021-02-21 at 9.44.26 PM Screen Shot 2021-02-21 at 9.44.26 PM](https://gevanwert.com/wp-content/uploads/2021/02/Screen-Shot-2021-02-21-at-9.44.26-PM.png)
Newer ST Models You will need Retrokit # MX2X-XY-AM:
MX200 DRO with Acur-ite TTL (9pin) XY scales with Arm Mount
(No jumpers needed)
Option: Replace MX2 with MX1 simple DRO
Option: Add -0E for Optical Edge Detection
Option: Replace –AM for –DM for desk mount stand (Arm Mount included)
Option: Add –Q for rotary axis.
NOTE: WE ALSO OFFER XY SCALE REPLACEMENTS !
PLEASE CONTACT US IF YOU DO NOT SEE YOU CONNECTION
![Screen Shot 2021-02-21 at 9.42.49 PM Screen Shot 2021-02-21 at 9.42.49 PM](https://gevanwert.com/wp-content/uploads/2021/02/Screen-Shot-2021-02-21-at-9.42.49-PM.png)