Can I switch this outlet for a USB outlet?
Your existing outlet (NEMA 6-20) is used for 240 volts while your USB/outlet (5-15) is designed for 120 volts. Assuming the 6-20 is correctly wired, you cannot just replace it with the USB outlet. As well as supplying the wrong voltage to anything plugged into it, the USB charger that is built in will probably die, possibly violently!

(The key to knowing that it is for 240 volts is that the right-hand slot is horizontal instead of vertical. The T-slot on the left is for 20 amps and can accept either a 6-15 (15 amp) ot 6-20 (20 amp) plug.)

If you want to use the new outlet in that place, you will need to go into your fuse/breaker box and change the wiring to the outlet to 120 volts.