Brand :Buffalo Optical Storage Write Speed 4x, 6x Hardware Platform Desktop PC About this product ■Compatible OS: Windows 10/8.1/7, Mac 10.10 or later ■Transfer rate: Write: BD-R XL (4-layer) (3-layer): 4x/BD-R (M-DISC) (3-layer): 4x ■Transfer rate: Write: BD-R (M-DISC) (dual layer): 6x/BD-R (M-DISC) (single layer): 4x Write: BD-R(Dual Layer)(Single Layer)(Single Layer):6x Transfer rate: Read: BD-ROM (1 layer)(2 layer)(UHD(2 layer))(UHD(3 layer)):6x Interface: USB3.0 ■Loading method: Tray type Power supply: USB bus power, external power supply compatible (AC-DC5 series)*Optional accessory ■Max. power consumption: 7.5W External dimensions (W x H x D): 138 x 14.4 x 152 mm (excluding projections) ■Weight: Approx. 300 g Main accessories: F-shaped USB cable (already installed in the main unit), USB Type-C conversion cable Main accessories: Utility DVD, user's manual, warranty card