100% work, works normally. Only includes main body, power adapter and USB cable, no box. Read Speed (max): BD-ROM : 12X BD-R(SL, M-DISC) : 12X BD-RE : 10X DVD-ROM : 16X DVD+R : 16X DVD-R : 16X DVD+R(SL, M-DISC) : 12X DVD+RW : 12X DVD-RW : 12X DVD+R(DL) : 12X DVD-R(DL) : 12X DVD-RAM : 5X CD-ROM : 40X CD-R : 40X Write Speed (max): BD