This is an EMOMO  2 rocker button 2 motor controller HX90 with USB slot.

HU is replacement for switch on the LEFT side when facing the sofa/chair.

HUN is replacement for switch on the RIGHT side when facing the sofa/chair.

It has a 5pin straight connector. 2 models available - both will work but for an exact replacement match the bar code on your controller (HUN or HU)

These operate differently to the HUE controllers - please check the barcode s/n