different between usb vs cdrom

usb

usb From the web:

• what usb does ps4 use
• what usb does ps5 use
• what usb ports do i have
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• what usb does ps5 controller use

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cdrom

cdrom From the web:

• what cd rom
• what cd rom stands for
• what does cd rom stand for
• what does cd rom mean
• cd rom in computer
• cd rom drive
• what is cdrom device arbiter service
• what does cd rom