The following is driver installation information, which is very useful to help you find or install drivers for HP Officejet 7400 series.For example: Hardware ID information item, which contains the hardware manufacturer ID and hardware ID. These two ID values are unique and will not be duplicated with other hardware. According to these two ID values, the matching driver information can be accurately found. This method is more effective than any others, and 100% correct.There are many other information items that you can use to find the driver version information and the required driver files.

The name of the driver type in the system is: Printer, and the drive type GUID is: {4d36e979-e325-11ce-bfc1-08002be10318}.

For Windows OS:
Windows 7 Professional Service Pack 1
Windows 7 Enterprise Service Pack 1
Windows 7 Ultimate Service Pack 1
Windows Server 2008 R2 Enterprise Service Pack 1
Windows 7 Home Premium

Hardware ID:
USBPRINT: USBPRINT\HPOfficejet_7400_ser66DE HPOfficejet_7400_ser66DE

Many hardware names are usually named after the chip model, and each chip model has its own dedicated driver, so as long as you know the chip model used by the hardware, you can find the right driver. For example, if your graphics card is named: "AMD Radeon RX 580", while actually the core chip model used is: "Radeon RX 580", then enter "Radeon RX 580" or "RX 580" to find the driver.

If you have a laptop or an all-in-one PC, you can also use the product name to search, and then go to the download page which has all the drivers for this machine (including: graphics card, network card, sound card, etc.). For example, if your laptop product name is: "Dell A6-9220e Inspiron Flagship", then type "Dell A6-9220e" to find all the drivers for this laptop.

Search steps:

1. Enter a keyword in the input box and click the "Search" button

2. In the query results, find the driver file you need, and click the download button