USB3.0 Dual-bay Hard Drive Docking Station ALXUM USB 3.0 to SATA Dual-Bay External Hard Drive Docking Station with Offline Clone/Duplicator Function for 2.5 & 3.5 Inch HDD SSD SATA (SATA I/II/ III). As the best hard drive docking station, ALXUM hard drive copier easily connects a hard drive to a laptop, makes cloning easier, supports up to 2X 18TB & UASP, Tool-Free. Feature - Hard Disk connect to PC, write and read of up to 405 MB/s. - Offline Clone without PC, write and read of up to 485 MB/s. - LED light indicates Power and Activity status. - Entering sleep mode without operation in 30 minutes. - Support Windows XP / Vista / 7 / 8 / 8.1 / 10 (32 / 64 bit), Mac OS 10.10 or higher, Linux 2.5" 3.5" Hard Drive Docking Station 1. Support 2x 18TB hard drive; Supports 2.5" & 3.5" SATA (SATA I/ II/ III) HDD and SSD. 2. SATA Docking Station Equipped with USB3.0; Support SATA III (6 Gbps) and UASP for optimal performance; Backward compatible with USB 2.0 /1.1. 3. Compatible Systems: Windows 2000/ XP/Vista/ 7/ 8,Mac OS 10.x or higher. 4. On/Off power switch; LED light indicates Power and Activity status; Entering sleep mode without operation in 30 minutes. Package Content 1x USB3.0 TO SATA Dual BAY Clone Hard Drive Docking Station 1x USB 3.0 Cable 1x 12V/3A Power Adapter 1x manual Attention - Target Disk must be larger than the Source Disk. (Capacity: Target Disk>Source Disk) - Please backup files in target hard drive before cloning. Any files in target hard drive will be overwritten when offline clone works. - Please make sure that there aren't any bad sectors on the drives in use, as to avoid data transfer errors, overheating and damage to the station. - Do not try to insert or remove HDD or SSD when another hard drive is running in case of data lo.