Supports 60H and 40H devices Device does not automatically enable payment device after power on Host (VMC) needs to enable the device through the enable command Updated version with enhanced stability using Double-Serial technology Compatibility testing recommended for users of the standard three LED MDB-RS232 box The version MDB-RS232 V2020 is updated from the standard three LED MDB-RS232 USB version and adds more features. It utilizes Double-Serial technology to provide better stability. After the MDB box is powered on, the device will not automatically enable the payment device, and the host (VMC) needs to enable the device through the enable command. Therefore, customers who are already using three LED MDB-RS232 boxes should test compatibility before replacing with this version box or contact customer service for advice. Color: Black Material: plastic Package Contents: 1*Coin Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.