Entering BIOS setup
1
Turn on or restart your laptop.
2
When the Dell logo appears, perform one of the following actions to enter the BIOS setup program:
•
With keyboard — Tap F2 until the
Entering BIOS
setup message appears. To enter the Boot selection menu, tap F12.
Hard drive is listed under the
System Information
under the
General
group.
USB features
The Universal Serial Bus, or well known as USB was introduced to the PC world in 1996 which dramatically simplified the connection
between host computer and peripheral devices such as mice and keyboards, external hard drive or optical devices, Bluetooth and many
more peripheral devices in the market.
Let's take a quick look on the USB evolution referencing to the table below.
Table 3. USB evolution
Type
Data Transfer Rate
Category
Introduction Year
USB 3.0
4.8 Gbps
Super Speed
2010
USB 2.0
480 Mbps
High Speed
2000
USB 1.1
12 Mbps
Full Speed
1998
USB 1.0
1.5 Mbps
Low Speed
1996
USB 3.0 (SuperSpeed USB)
For years, the USB 2.0 has been firmly entrenched as the de facto interface standard in the PC world with about 6 billion devices sold, and
yet the need for more speed grows by ever faster computing hardware and ever greater bandwidth demands. The USB 3.0 finally has the
answer to the consumers' demands with a theoretically 10 times faster than its predecessor. In a nutshell, USB 3.0 features are as follows:
•
Higher transfer rates (up to 4.8 Gbps)
•
Increased maximum bus power and increased device current draw to better accommodate power-hungry devices
•
New power management features
•
Full-duplex data transfers and support for new transfer types
•
Backward USB 2.0 compatibility
•
New connectors and cable
The topics below cover some of the most commonly asked questions regarding USB 3.0.
30
Technology and components
