Product InformationPocket8086 is an IBM PC-XT compatible laptop that supports one of the 8086 or 8088 processors, as well as the NEC V20/V30 processor. In addition to the base 640KB memory, it also comes with 128KB UMB memory. Its BIOS uses IBM PC-XT 05/08/86 version, and is pre-installed with DOS6.22 system. If a V20 or V30 processor is installed, it will support Windows3.1. IPS LCD can seamlessly switch between 16:9 and 4:3 display ratios.If you have any problem when using our product, please contact our support team. We will give you a satisfactory answer. Thank you！