HP8711A, serial # 3325A02032 with options: IBASIC (1C2), 75ohm (1EC). Unit upgraded to Firmware version 2.10. This unit was refurbished by a certified HP871X repair technician and meets all operational tests according to service manual and all services adjustments have been completed and up to date calibrations constants included on 3.5” floppy disk. Also includes Operating and Programming manual and Service manual. Unit has normal cosmetic wear see pictures. We cannot ship internationally!