Description: 1.44MB built-in flash memory, with FAT12 format, used for cache data from usb flash drive. Within 1.44MB capacity of Files in root directory or 999 folders can be searched. Long file name and 4-level directory in 999 folders supported. Jumpers with function for different machines 100 disk image file supported. (used for machine with non FAT disk format, example for make boot disk) Floppy driver with below function needed:Floppy driver with 34pin interface,and 5V DC power plug Use 2HD flpppy disk with 1.44MB capacity Format of disk : Cylinders: 80 Tracks: 160 Sectors/Track: 18 Bytes/Sector: 512 Date Transfer rate: 500 kbps Encoding method: MFM Panel:8 segment numbers: represent partitions number Green led: status of read and write operation USB port: connect USB flash drive Button:When no usb flash drive pluged on emulator:Left button used to rise ten-digit, right botton used to rise single-digit, press 2 button together to rise hundred-digit, when the hundred-digit is "b", the image mode used.When an usb flash drive pluged on emulator:Left button used to transfer data from built-in memory into usb flash drive, right button used to transfer data from usb flash drive into built-in memory.Firmware version of emulator：Keep pressed 2 button together , power on , 8segment numbers will display firmware version and data of emulator to detect different model.Error code：E0：no specified file in usb flash driveE16：built-in memory faultJumper setting：J5：--- JA：set to generete READY signal on 34pin of floppy driver interface JC：--- JB：--- S0：Driver select 0 S1：Driver select 1 MO：Motor Package Includes:1 x USB Emulator 1 x CD 4 x Screws 4 x Jumpers