Panasonic WJ-HDE300/4TB Network Recorder 4TB Expansion BayExpand Your Recording Capacity with Reliable Network Storage The Panasonic WJ HDE300 4TB Network Disk Recorder Expansion Bay provides additional disk space for Panasonic digital disk recorders. With the capacity to hold up to four hard drives and support for RAID level 5, this expansion unit delivers high tolerance to disk errors and ensures reliable network storage. Brand: Panasonic Model: WJ HDE300 4TB Compatibility: WJ HD309A, WJ HD316A, and WJ