Asustek Computer has unveiled in Las Vegas its latest product lineup including the Intel-based entry-level ZenFone smartphone series, the new PadFone mini smartphone, the PadFone X smartphone, the Transformer Book Duet (TD300) notebook and the ROG Swift PG278Q WQHD gaming monitor. The ZenFone 4 adopts a 4-inch IPS panel, an Atom Z2520 (1.2GHz) 2x2-core processor and a 5-megapxiel back-end camera, while the ZenFone 5 uses a 5-inch IPS+ panel, an Atom Z2580 2x2-core processor and an 8-megapixel PixelMaster camera, which supports High-speed continuous shooting, 400% ISO at low light environments and Image Stabilizer function. The ZenFone 6 features a 6-inch HD display, a 13-megapixel PixelMaster camera and Asustek's SonicMaster Audio enhancement technology. All the ZenFone smartphones feature 8GB internal storage and support up to 64GB memory cards. The series also support dual SIM card function. The ZenFone series will be available in March with the 4-inch model priced at US$99, the 5-inch model US$149 and the 6-inch model US$199. The products will launch initially in Taiwan, China and countries in Southeast Asia.