Two Questions:

1. What is the best way to open up hubs and power bricks-specific hubs/bricks of interest below.

2. What specific experience, specific recommendations for replacement power bricks for hubs below.

GEARMO 10 Port

ANKER 9+1

AITECH 10 Port

ROSEWILL 10 Port

Really hoping for input from those that have actually opened these specific hubs and bricks in a way that does not cause damage, limits damage.

For input on replacement power bricks again hoping for responses from those that have replaced power bricks on these specific hubs. 

Really appreciate any help on this issue-TIA