HP Pavilion 23-h050 TouchSmart AIO - Windows 8.1 with AMD Quad-Core A6 5200 Accelerated Processor. 5 point optical touch enabled 23" diagonal IPS widescreen full HD LED backlit display. 4GB PC3 12800 DDR3L 1600 SDRAM memory. 1x4GB. 1TB 7200RPM serial ATA hard drive. AMD Radeon HD 8400 Graphics. Wireless chiclet style keyboard with volume control. Win8 hot keys and optical mouse. 2 x USB 3.0. Wireless LAN 802.11b/g/n featuring Single-band.