This is Version B 6 button 7 pin male plug power recliner lift chair remote replacment.
It can replace most of the HHC MotorMotion HSW306 hand control.
Version B: If your chair has separate controls for the backrest and footrest (incline and decline buttons for each), then choose Version B of this remote.
With 6 large black buttons that have usb and backlight, you could charge your phone, 7 pin round round male plug with straight plug connector, if the end is different, it will not be replaced.
Quick Setup: Easy installation with a 7-pin round male plug; check connector type for compatibility.