... PC 21.5 inch All In One Computer 21.5' AIO PC with Optical Type Dual Touch screen Description: ... 1G DDR3 Display21.5' TFT LCD panel, 1920x1080, LED BL, Optical Type Dual Touch screen System Memory ... 1066/800MHz DDR2/DDR3 SODIMM(2 slots) HDD 2.5' ,SATA ... headphone or wireless headphone Remark: All our products are complied with CE (EMC & LVD), UL, FCC, FDA, GS ...