PSA
Stands for “Pressure Sensitive Adhesive,” is a kind of adhesive tape used for bonding the display or TDM to the device chassis.

Surface Pro 9 PSA Kit (Image source: Surface Pro 9 Service Manual)
Stands for “Pressure Sensitive Adhesive,” is a kind of adhesive tape used for bonding the display or TDM to the device chassis.

Surface Pro 9 PSA Kit (Image source: Surface Pro 9 Service Manual)