I bought an external burner. If I don't connect with an external power supply, is it very damaging to the USB interface? But my desktop power supply is very large, can't you provide enough power to the burner?
There is an opportunity to hurt, this depends on the quality of the motherboard. In addition, the power is bigger, the power of the 5V and not through USB 5V, power plant and substation capacity and the capacity of your home is not directly related, such as substation capacity is low when you home is to have a chance to low voltage and power.In general, the question you want, a dedicated external burner, will take into account either the power of the DIY itself or the interface outside the box.
External CD-ROM is placed outside the case of CD-ROM, portable and mobile features. With a variety of data interfaces, mainly USB interface, and some may also have 12V DC power interface, with a variety of types, such as CD, -ROM, DVD-ROM, Blu ray drive, and so on.
First, do not connect the USB interface to the front panel of the panel. Because the extended line voltage inside the chassis is attenuated, the rear panel interface of the case should be used! Second depends on the computer USB interface type, USB 2 interface voltage, 5V current, 800mA USB, 3 voltage, 5V current, 1500mA, this needs attention! For an external burner, the USB 3 interface is enough! If the USB2.0 isn't current enough, you can buy a dual USB - to - one auxiliary power line to solve a problem! With respect to current and voltage, you can see the parameters of an external burner
The power supply of the USB interface on the motherboard is limited, or the power it provides is relatively smallUnless it is now added to the new technology, the USB power interface is enhancedGenerally speaking, the power supply in front of the main board is smaller, and the power supply in the rear is larger. The landlord uses the rear USB interface as much as possible, although it is more troublesomeAs for the damage to the motherboard USB interface, this should not worry too much. A good motherboard, there are protection, not because of USB power supply motherboard problems. But in that case, use the rear USB port as much as possible. Of course, conditions permitting, and often need to use the USB to charge the mobile phone hardware and the external connection equipment as the landlord, later on when to update or buy the motherboard, the motherboard USB power to see more strengthening. Such as Gigabyte power board with three times power supply technology
USB drive directly from the USB port power can be used, generally only 5 inches of USB CD-ROM only need additional power supply. However, one thing to note is that the USB port in front of the box has a relatively small current (about 200mA), and the USB drive must be connected to the USB port (500mA) on the back of the chassis.
