HP and Cingular Wireless announced availability of the first notebook PC in the United States to feature built-in global mobile broadband capabilities.

The HP Compaq nc6400 Notebook PC with integrated Cingular Wireless UMTS/HSDPA-based technology allows business professionals to connect in more areas at broadband speeds to corporate networks, email and the Internet without being tied to a wireless hotspot.

Customers can enjoy the benefits of mobile broadband both in the United States – either with Cingular Wireless BroadbandConnect or high-speed EDGE services – and abroad in more than 115 countries. The HP Compaq nc6400 is the first notebook with a tri-band UMTS modem supporting data rates of up to 3.6 megabits per second. The nc6400 comes with integrated high-performance dual-antennas and Cingular Communication Manager to establish a wireless connection via Cingular’s 3G network.

HP and Cingular Wireless collaborated on the nc6400 to take advantage of Cingular’s UMTS/HSDPA network, which is available currently in 145 major metropolitan areas including 65 of the top 100 largest cities in 33 states, Puerto Rico and the District of Columbia. This mobile broadband network offers average download speeds of 400-700 kilobits per second, with bursts to more than one megabit per second.

Wireless LAN and Bluetooth wireless technology complement the notebook’s convenient mobile broadband technology. The nc6400 features a 14.1-inch diagonal widescreen display, an optional HP Privacy Filter that helps ensure the screen is visible only to the user, Intel Core 2 Duo processors and support of 3D graphics.

The nc6400 with integrated UMTA/HSDPA-based technology is the latest result of HP’s alliance with Cingular Wireless. Most recently, HP and Cingular introduced the HP iPAQ hw6900 series Mobile Messenger with built-in GPS.

The HP Compaq nc6400 Notebook PC with integrated Cingular Wireless BroadbandConnect is expected to be available in late December at a starting price of $1,599.