QVP-41C OS QVR Pro OS (QVP) CPU Intel® Celeron® J6412 4-core/4-thread processor, burst up to 2.6 GHz CPU Architecture 64-bit x86 Graphic Processors Intel® UHD Graphics Hardware-accelerated Transcoding System Memory 8GB Maximum Memory 16 GB ( 2 x 8 GB) Memory Slot 2 x SO-DIMM DDR4 Flash Memory 4GB (Dual boot OS protection) Max Live Cameras (Local Display) 24ch @ All 720p,H.264, 30FPS 12ch @ All 1080p,H.264, 30FPS Max Playback Cameras (Local Display) 12 Max Concurrent Connection (Client) 8 (4 live cameras / per remote client) *The number of client concurrent connection varies by live cameras Embedded Channel 8 Max Channel 24 H264 / 1920x1080 / 30FPS Max Throughput 300 Mbps Drive Bay 4 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 SATA hard disk drives 2.5-inch SATA solid state drives Hot-swappable M.2 SSD Slot 2 x M.2 2280 PCIe Gen 3 x2