HARDKERNEL ODROID-XU4 User Manual
Also see for ODROID-XU4: User manual
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Contents
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2 ODROID-XU4 USER MANUALDifferences between a typical PC and aSingle Board Computer (SBC)If you are used to using a standard PC such as an OSX orWindows machine, there are a few small differences to note whentransitioning to an ARM device. To begin with, the speed of an ARMprocessor is not directly comparable to the speed of an Intel proces-sor. Because of the efficiency of the CPU, the XU4 can give greatresponse time that feels just as fast as using a more expensive com-puter. The operating systems available for the XU4 are also highlyoptimized, and benefit from the expertise of many open-source con-tributors that continually review each others’ work that bring dailyimprovements to the OS.In addition, nearly all of the applications available for the XU4also have their source code publicly available, which means thatyou can freely modify and update the applications to fit your specificneeds. Program authors often maintain a GitHub repository, wheresuggestions can be submitted, reviewed and distributed to all of theapplication’s users.The XU4 also uses Solid State technology for its storage me-dia, although a conventional hard disk may be used as an auxiliarydevice. The boot partition can be stored on either a microSD card orthe much faster eMMC module, and Hardkernel’s products have theunique distinction of supporting removable eMMC modules, so thatoperating systems may be switched out conveniently and easily. AneMMC module is a type of storage typically used in a smart phone,and is one of the more advanced compact media devices available.The power consumption of a typical personal computer canbe anywhere between 100W and 1000W or more, depending on theperipherals, processor and type of power supply used. However, theODROID-XU4 uses between 10W and 20W, greatly reducing yourelectricity bills, as well as allowing unique power configurations suchas compact solar power cells and long-running batteries.Components Included on an SBCThe ODROID-XU4 contains many of the same connections asa typical computer, with 1 USB 2.0 port, 2 USB 3.0 ports, an Ether-net port that supports Gigabit transfer speeds, an HDMI connector for720p and 1080p monitors, and a 5V/4A DC power connector. In ad-dition to these standard inputs, the XU4 also includes a 40-pin GPIOport, an external RTC battery connector, a USB-UART serial consoleport, an eMMC module connector, and a dedicated slot for a microSDcard. For more details, refer to the ODROID-XU4 introductory videosat https://youtu.be/wtqfC9v0xB0 and https://youtu.be/lUchfyTpOjU.Chapter 1 |
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