basic parameter apply style:desktop computer install mode:in computer interface style:ATAPI/EIDE max read speed:52X technic parameter random average read time:80ms Data Buffer:128KB function parameter can suspensory disc standard:CD-R/RW,CD-IFMV,PhotoCD,CD- Extra,VideoCD,CD-ROM, and CD-DA disc load style:tray mount system: Horizontal & Vertical check function:have front board identity :earphone jack /busyness display led/urgency exit /volume adjust button/tray switch else identity:nothing out parameter shell size(mm):146x201x41.4 environment parameter work Temperature(°C):5°C-+45°C work Humidity:8%--80%RH operating Temperature(°C):-20°C-+55°C operating Humidity:20%-65%RH