a random pre-installed products
for random pre-installed Windows product, there will be COEM (Certificate Original Equipment Manufactures) and OEM in two forms, by definition, random pre-installed products must follow the computer's presence and the presence of these two products will bind the computer's motherboard , can not be used by the machine, if the computer is damaged, the software products also disappear randomly. Both products advantage is that the price is extremely low, may also downgrade, but only allows lower levels, namely Windows 7 may be downgraded to Windows XP, Windows 8 can downgrade to Windows Vista. The difference between OEM and COEM is that the OEM is pre-installed on the computer hard disk by the computer manufacturer. The customer can obtain the hardware product and cannot purchase it separately. The COEM product can be purchased separately, but the condition must be purchased with the new computer. If the purchase of a COEM product is installed on a computer that has already been used, although the software can be activated, from the perspective of authorization, this practice will be regarded as a wrong authorization, that is, the software is pirated.
Note: After purchasing these two products, please remember to protect the Certificate of Authenticity (Certificate of Authenticity)
II. MOLP (Microsoft Open License Pack)
The product form is Microsoft's largest sales volume. It is suitable for users who purchase a large number of Microsoft products, especially enterprise users. The minimum 5 sets are purchased. The main features are:
1. The product is permanent;
2, its authorization is always authorized according to the product line, that is, to buy Windows products, now buy Windows 8, but you can downgrade to any version before Windows 8, such as Windows 7, Windows Vista, Windows XP, Windows 98, etc.,
3. Can be used for transfer (except for the Windows product line, this is not very good)
4. Convenient management, purchase of this product form Software products, customers will be able to log in to the Microsoft Volume Licensing Service Center to manage all the software purchased by the enterprise, including viewing authorization information, image download, key management, etc., avoiding the number of boxed products It is difficult to manage the embarrassing face.
5, MOLP includes a variety of purchase methods including GGS, EA, WEEA, Open, Select Plus, Open Value, etc. Here I want to explain the purchase method of GGS (Get GenuineSolution). GGS is a software legalization solution launched by Microsoft based on China's large number of Microsoft pirated software. This solution is only for the authorization of the Windows product line. For the price, Microsoft has a global pricing strategy, but the price of GGS will be Very much lower than its standard price. And GGS is a full version of the license, and the purchase agreement such as EA is an upgraded version of the license, the purchase of the upgraded version of the license must first have a full version of the license.
III. FPP (Color Pack)
This product form is a boxed full version of the licensed product on the market. The boxed content is basically the same as the COEM product, but the packaging is more beautiful. Its characteristics are that it can be used for transfer, but there is no permission to downgrade. However, the price of such products is relatively high, and personally feel that it is not very cost-effective;
Fourth, ESD (ElectronicSoftware Download)
Due to poor management of COEM product line, there are many market fakes, Win8 products are cancelled. COEM and FPP product lines (so everyone can see all the Windows 8 boxed products in the domestic market is absolutely fake), and because individual users will not buy products through MOLP, Microsoft has launched ESD products. That is, the customer purchases the software product online through the Microsoft official store. Its characteristics are basically the same as those of FPP. It cannot be downgraded and can be used for transfer. However, the difference is that ESD does not have CD media and packaging, and such software license belongs to the upgrade license. FPP belongs to the full version of the license, that is, FPP is legally installed and used on bare metal, and ESD is installed on the bare metal for wrong authorization. Therefore, the purchase of ESD products must require the client computer to have the legal full version license of Win7 or XP.
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