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Other types will depend on your device or speed. Newest mobile phones (NOT sure about Apple) uses USB-C as well as newer laptops. Check your device for proper compatibility.
Sorry, there was a problem. Please try again later.USB-A is the old-school rectangular port that's on almost all desktop PCs and TVs. USB-B is the square port that you see on devices like a printer. USB-C can be many sizes but on most modern devices, it's a small oval. USB-D isn't a thing. BCD stands for binary coded decimal. Probably not relevant to these USB drives.
Sorry, there was a problem. Please try again later.Not one hundred percent sure what you're asking but I think you're asking about the different types of USB plugs found on usb drives. Type A is the typical usb plug found on the back or side of non-apple products, it appears like a slot with a sometimes colored piece inside and it is keyed, only plugs in one way. Type B is a strange looking six sided thing usually only seen on the back of printers that can connect by USB or usb connected DVD Burner devices. NEWER non apple products may have a type C plug. C is a different looking oval shaped plug that is not keyed, it will plug in any old way unlike older usb A, micro usb, etc. USB C is also usb 3.0 but can operate at slower speeds as well since 3.0 is backwards compatible with 2.0. There are drives sold that have a choice of interface plugs in one unit, I have a unit with a C and an A connector on one drive and you select according to which end you plug into your device. I have never heard of usb D? Basically A is what you'll see most, maybe a few B on the back of your printer or dvd burner, C is the new thing on new non-apple hardware since it can handle more voltage and faster data transfers than earlier incarnations of USB. Most phone chargers have USB A where it plugs in the wall but may be USB C where the cable plugs into the phone.
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