Latitude 7490 Owner's Manual
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- Notes, cautions, and warnings
- Working on your computer
- Safety precautions
- Electrostatic dischargeESD protection
- ESD field service kit
- Transporting sensitive components
- Before working inside your computer
- After working inside your computer
- Safety precautions
- Removing and installing components
- Recommended tools
- Screw size list
- Subscriber identification module card
- Removing SIM card or SIM card tray
- Replacing SIM card
- Removing dummy SIM card tray
- Base cover
- Removing base cover
- Installing base cover
- Battery
- Lithium-ion battery precautions
- Removing battery
- Installing battery
- Solid state drive
- Removing Solid State Drive
- Installing Solid State Drive
- Speaker
- Removing speaker module
- Installing speaker module
- Coin cell battery
- Removing the coin cell battery
- Installing coin cell battery
- WWAN card
- Removing WWAN card
- Installing WWAN card
- WLAN card
- Removing WLAN card
- Installing WLAN card
- Memory modules
- Removing memory module
- Installing memory module
- Heat sink
- Removing heat sink assembly
- Installing heat sink assembly
- LED board
- Removing LED board
- Installing LED board
- Smart card module
- Removing smart card cage
- Installing smart card cage
- Touchpad buttons board
- Removing touchpad buttons board
- Installing touchpad buttons board
- Power connector port
- Removing power connector port
- Installing power connector port
- Display Assembly
- Removing display assembly
- Installing display assembly
- Touch display panel
- Removing touch display panel
- Installing touch display panel
- Display Bezel
- Removing display bezel [nontouch]
- Installing display bezel [nontouch]
- Nontouch display panel
- Removing the display panel [nontouch]
- Installing the display panel [nontouch]
- Camera Microphone Module
- Removing camera-microphone module
- Installing camera
- Display Hinge Caps
- Removing the display hinge cap
- Installing the display hinge cap
- System board
- Removing system board
- Installing system board
- Keyboard
- Removing keyboard assembly
- Removing keyboard from keyboard tray
- Installing keyboard to keyboard tray
- Installing keyboard assembly
- Palm rest
- Replacing palm rest
- Technology and components
- DDR4
- HDMI 1.4
- USB features
- USB Type-C
- Thunderbolt over USB Type-C
- System specifications
- Technical specifications
- Hot key combinations
- System setup
- BIOS overview
- Entering BIOS setup program
- Navigation keys
- One time boot menu
- System setup options
- General screen options
- System Configuration screen options
- Video screen options
- Security screen options
- Secure Boot screen options
- Intel software guard extensions screen options
- Performance screen options
- Power management screen options
- POST behavior screen options
- Manageability
- Virtualization support screen options
- Wireless screen options
- Maintenance screen options
- System logs screen options
- Admin and System password
- Assigning a system setup password
- Deleting or changing an existing system setup password
- Updating the BIOS
- Updating the BIOS in Windows
- Updating the BIOS in Linux and Ubuntu
- Updating the BIOS using the USB drive in Windows
- Updating the BIOS from the F12 One-Time boot menu
- System and setup password
- Assigning a system setup password
- Deleting or changing an existing system setup password
- Clearing CMOS settings
- Clearing BIOS [System Setup] and System passwords
- Software
- Supported operating systems
- Downloading Windows drivers
- Chipset driver
- Video driver
- Audio driver
- Network driver
- USB driver
- Storage driver
- Other drivers
- Troubleshooting
- Handling swollen Lithium-ion batteries
- Dell Enhanced Pre-Boot System Assessment ePSA Diagnostic 3.0
- Built-in self-test [BIST]
- M-BIST
- LCD Power rail test [L-BIST]
- LCD Built-in Self Test [BIST]
- Diagnostic LED behavior
- Recovering the operating system
- Real Time Clock reset
- Backup media and recovery options
- WiFi power cycle
- Drain residual flea power [perform hard reset]
- Getting help and contacting Dell
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USB Type-C
USB Type-C is a new, tiny physical connector. The connector itself can support various exciting new USB standard like USB 3.1 and USB power delivery [USB PD].
Alternate Mode
USB Type-C is a new connector standard that's very small. It's about a third the size of an old USB Type-A plug. This is a single connector standard that every device should be able to use. USB Type-C ports can support a variety of different protocols using alternate modes, which allows you to have adapters that can output HDMI, VGA, DisplayPort, or other types of connections from that single USB portUSB Power Delivery
The USB PD specification is also closely intertwined with USB Type-C. Currently, smartphones, tablets, and other mobile devices often use a USB connection to charge. A USB 2.0 connection provides up to 2.5 watts of power that'll charge your phone, but that's about it. A laptop might require up to 60 watts, for example. The USB Power Delivery specification ups this power delivery to 100 watts. It's bi-directional, so a device can either send or receive power. And this power can be transferred at the same time the device is transmitting data across the connection.This could spell the end of all those proprietary laptop charging cables, with everything charging via a standard USB connection. You could charge your laptop from one of those portable battery packs you charge your smartphones and other portable devices from today. You could plug your laptop into an external display connected to a power cable, and that external display would charge your laptop as you used it as an external display all via the one little USB Type-C connection. To use this, the device and the cable have to support USB Power Delivery. Just having a USB Type-C connection doesn't necessarily mean they do.
USB Type-C and USB 3.1
USB 3.1 is a new USB standard. USB 3's theoretical bandwidth is 5 Gbps, while USB 3.1 Gen2 is10Gbps . That's double the bandwidth, as fast as a first-generation Thunderbolt connector. USB Type-C isn't the same thing as USB 3.1. USB Type-C is just a connector shape, and the underlying technology could just be USB 2 or USB 3.0. In fact, Nokia's N1 Android tablet uses a USB Type-C connector, but underneath it's all USB 2.0 not even USB 3.0. However, these technologies are closely related.Data is not available for the Topic
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