QVP-63B OS: QVR Pro OS (QVP) CPU: Intel® Core™ i3 4-core/8-thread Processor CPU Architecture: 64-bit x86 Graphic Processors: Intel® UHD Graphics 730 Hardware-accelerated:Transcoding System Memory:16 GB SODIMM DDR4 (1 x 16 GB) Maximum Memory: 64 GB ( 2 x 32 GB) Memory Slot: 2 x SO-DIMM DDR4 Flash Memory: 5GB (Dual boot OS protection) Max Live Cameras (Local Display): 50ch @ All 720p,H.264, 30FPS 30ch @ All 1080p,H.264, 30FPS Max Playback Cameras (Local Display) 16 Max Concurrent Connection (Client) 16 (4 live cameras / per remote client) *The number of client concurrent connection varies by live cameras Embedded Channel 8 Max Channel 36 H264 / 1920x1080 / 30FPS Max Throughput 1188 Mbps Drive Bay 6 x 3.5-inch SATA 6Gb/s, 3Gb/s The system is shipped without HDD. For the HDD compatibility list, please visit https://www.qnap.com/compatibility/ Drive Compatibility 3.5-inch bays: 3.5-inch SATA hard disk drives 2.5-inch SATA hard disk drives 2.5-inch SATA solid state drives Hot-s