EONVICHirose 4Pin Male to D-Tap for Zoom F8 Sound Devices 633/644/688 (Coiled Cable)

What does that little inline black box do? is it not needed or not recommended for use with my mixpre 10 mkii ??

The hirose connector you describe is 7p-4s. According to hirose' datasheet s means female (p is male). Could you please clarify?

Does it work with sound devices mixpre 10mkii recorder ????