# Monitors
Each monitor has its own information (connections, contrats, network ports, etc.). All this information is divided into tabs. You can find your computers in **Assets > Monitors**:
{% hint style="success" %}
Note that if you modify a field manually, it will be considered locked. This will prevent it from being modified the next time the automatic inventory is uploaded.
For more information, see [lock](https://github.com/glpi-network/gitbook/blob/main/manual/modules/assets/broken-reference/README.md)
{% endhint %}
In a display form, the following information is available:
* Name
* [Location](/documentation/tabs/common_fields/location.md)
* [Technician in charge](/documentation/tabs/common_fields/technician_in_charge.md)
* [Group in charge](/documentation/tabs/common_fields/group_in_charge.md)
* [Alternate usernmame number](/documentation/tabs/common_fields/alternate_username.md)
* [Alternate usernmame](/documentation/tabs/common_fields/alternate_user.md)
* [User](/documentation/tabs/common_fields/user.md)
* [Group](/documentation/tabs/common_fields/group.md)
* Size
* [UUID](/documentation/tabs/common_fields/uuid.md)
* [Update source](/documentation/tabs/common_fields/update_source.md)
* [Status](/documentation/tabs/common_fields/status.md)
* [Monitor type](/documentation/tabs/common_fields/asset_type.md)
* [Manufacturer](/documentation/tabs/common_fields/manufacturer.md)
* [Model](/documentation/tabs/common_fields/model.md)
* [Serial number](/documentation/tabs/common_fields/serial_number.md)
* [Inventory number](/documentation/tabs/common_fields/inventory_number.md)
* [Network](/documentation/tabs/common_fields/network.md)
* [Management type](/documentation/tabs/common_fields/management_type.md)
* [Comments](/documentation/tabs/common_fields/comments.md)
* [Ports](/documentation/tabs/common_fields/ports.md)
**Management type:**
It is possible to manage displays either unitary or globally.
Unitary management corresponds to one display per computer while global management make the printer a virtual global element that will be connected to several computers.
Global management allows to limit the number of elements to manage when these elements are not a strategic data in the assets management.
It is possible to use [templates with displays](/documentation/modules/overview/templates.md).
## Impact Analysis
Impact analysis enables an infrastructure diagram to be drawn up, showing the dependencies and impacts in the event of equipment loss. This can be saved and exported
Go to Impact analysis
## Operating systems
Operating systems includes information about your machine's OS :
* Name
* Version
* Architecture
* Service Pack
* Kernel
* Edition
* Product ID
* Serial number
* Company
* Owner
* Host ID
* Installation date
Go to Operating systems
## Software
Lists all the software brought up during the inventory and those added manually
It is possible to install (in the logical sense) software on a PC manually.
To add new software to the list of applications, you need to go to the Assets > Software tab, which will then be visible from the software tab of the various elements of the installed base.
Go to Software
## Connections
The connections are all the other hardware connected to the machine :
* [Computer](https://github.com/glpi-network/gitbook/blob/main/manual/modules/assets/computer.md)
* Other asset you have created
These items can be updated by the automatic inventory, but you can also connect them manually.
Go to Connections
## Network Ports
This tab allows to manage the network ports attached to an equipment. The information that can be viewed is:
* Name
* Port number
* MTU
* Speed
* Internal status
* Last change
* Number of I/O bytes
* Number of I/O errors
* Duplex
* VLAN
* Connected to
* Connection
* Deleted
Go to Network ports
## Management
Management of financial and administrative information, this information is visible in the 'Management' tab on the computer's form.
Go to Management
## Contracts
GLPI supports contracts management, in order to manage contract types such as loan, maintenance, support...
Contracts management allows to:
* make an inventory of all contracts related to the organization assets
* integrate contracts in GLPI financial management
* anticipate and follow contract renewal.
Go to Contracts
## Documents
The document tab lets you link different types of file to a material (PDF, txt, png, etc.) You can attach a document already uploaded to GLPI or add a new one directly from this tab.
Go to Documents
## Knowledge Base
Lists all the articles in the knowledge base relating to the material.
Go to Knowledge Base
## Tickets
View all tickets linked to the computer.
Go to Tickets
## Problems
This tab refers to all hardware-related problems. Problems can also be linked to tickets, projects, etc. This allows you to have a complete scenario when necessary.
Go to Problems
## Changes
Changes lists all changes related to a material. From this tab, you can't link a change directly, you can do it from **`Assistance`** > **`Changes`** > **`Items`**. You can create a new change from this page, which will be linked to the material you have selected.
Go to Changes
## Links
Links offer several possibilities. Send the GLPI object file to another URL of your choice, or generate an RDP file, for example.
Go to Links
## Locks
Locks are used to prevent a field from being modified when the inventory is uploaded. You can lock/unlock the fields you wish in a GLPI object.
Go to Locks
## Notes
Note lets you add enriched text and attach a document.
Go to Notes
## Reservations
The reservation tab lets you reserve equipment, view the reservation schedule, or cancel the possibility of reserving this equipment. By default, equipment cannot be reserved; you must first authorize this action manually.
Go to Reservations
## Domains
You can attach Domains to your computer. Domains are also linked to other objects such as records, problems, etc.
Go to Domains
## Appliances
Appliances includes all business applications managed within GLPI. They can be linked to another GLPI object (computer, application, etc.) as well as to another appliance.
Go to Appliances
## Databases
Databases list databases discovered by automatic inventory and those entered manually.
Go to Databases
## Import information
Import information is information that is uploaded and governed by equipment import rules (administration > rules > Rules for import and link equipments)
## History
The *History* tab is used to show any changes made to an item. The following information about the changes is available:
* ID of the change.
* Date and time the change was made.
* User who made the change. If this field is not filled, it means that the action was done automatically (For example: automatic inventory update).
* Field that was changed.
* Description of the change that was made.
The description of the change represents either the difference between the old and the new value (For example with location field: Change HQ to Remote Office A), or the explanation of the action which was carried out (For example: Uninstallation of a software: "Gimp 2.0").
{% hint style="info" %}
For dropdowns or objects with a parent/child relationship, the modification of a child will appear in the history of the parent element.
{% endhint %}
## All Information
For an item, all information is displayed on one page from the *All* tab. This shows all of the tabs of an object's form in one view, one below the other.
## The different actions
Apart from [common actions](/documentation/modules/overview/actions.md), some actions are specific to displays:
* [connect a display to a monitor](https://github.com/glpi-network/gitbook/blob/main/manual/commontabs/item_connexions.md)
---
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