【1】***Attn: Please DO study the listing page after the "Product Information" table the "Product guides and documents" section, BOTH the "Installation Manual(PDF)" and the "User Guide(PDF)" to the use this kit correctly. The PACKING includes the Complete Instruction Folder info note.*** NO Traditional DIGITAL Display to show the POST codes. *** MUST use the Android APP to display results on the screen, save hassles of diagnostic codes lookup manually. The include Manufacturer APP was built on 32bit platform, passed the Android security scan checks and Google Play pending. The 64bit latest APP is under development and will be updated later for the latest Android Phones. Free lifetime support! | 【2】Unique USB-Alone Diagnosis featured. *** 【Not just the traditional Bios POST test card】 *** New latest smartphone technology in using the USB ports ( Standard USB / micro USB / Type C ) to diagnose the computer motherboards. 【NOT just getting the electric power from USB ports but RUNNING the diagnosis data through USB ports】. A very powerful Essential Nice Handy computer repair tool kit for quick help on diagnosing Desktop PC, Server, Laptop, All-in-one PC, Android Smartphone / Tablet, customized built miniPC and Mac machines ... etc. A great motherboard tester diagnostic kit that provides the most accuracy and effectiveness in making the computer troubleshooting and repairs much easier. | 【3】USB diagnosis - Save hassles of taking the dusty PCs or laptops apart. Follow the English PDF user guides, then powering on and let the Android APP to work with this new test kit to auto scan the motherboard for faulty components quickly. ***** When testing different PCs together using USB Diagnosis, please make sure follow the listing User Guide(PDF) for the 【Latest Updates with PRECAUTIONs and Extra Tech Tip】 to UNPLUG the USB cable between each test and restart, otherwise we may get the last cached working motherboard results on the faulty PC motherboard test. ***** | 【4】All-in-one Multiports support - Different complete bus connector adapter parts included. Made of quality PCB, transistors and capacitor components. Direct pinpointing the faulty motherboard components to greatly reduce the costs yet increase the effectiveness in the computer diagnostic repairs. ***** Videos and the PDFs instructions please see the listing "Videos" section and the "Product guides and documents" section for more details, if have any question or need more helps in learning how to use this latest kit, please contact seller on Amazon. You mostly get the reply in 12 hours. ***** | 【5】*** Any question, please login to your Amazon and then use “Contact Seller” option to ensure you receiving the best supports and the timely response from the 29 years computer IT Professional. *** This kit works on Both New Old Desktop PC Laptop Computers, IBM compatible, Mac machines (using USB), Android devices Smartphones and Tablet PCs. Comes with Step by Step Easy Guides, videos instructions, PDF pictorial manuals with Easy Flowcharts and Latest Updates with Precautions. *** Great for PC Technicians, Computer Owners, Computer Class Student Learners and PC DIY Lovers, Hardware Traders, professionals and novices ***. Nice Essential must have to add to our computer tool boxes.