• Standalone 4 writers BD-R/BD-RE and DVD+-R/RW/DL    duplicator • 128MB Memory Buffer to provent the data overflow • Scaleable Recording Speed for DVD+/-R • Supports writing to BD-R/BD-RE, DVD+-R/RW/DL and     CD R/RW • Up to 500GB Optional Hard Drive for BD/DVD image     archival • Store Multiple Hard Drive Images • Automatically detects BD or DVD • Easy Firmware Upgrade through Blu-Ray Drive