OMEGA 2+ MINI EXPANSION DOCK DIY , CHECK PLEASE ,,,.......

[vishnu srinivas]

I m just making an expansion dock for Omega 2plus.. this simple version includes
CH34O for USB to Serial .
USB hosting ,
3 way power input, thats all..

please check and give me suggestions for better performance. is ( USBLC6) esd protection compulsory ?

schematic