Home > Product overview > SMB > Middle-end > TS-x53U Series > TS-853U-RP Features Specification Utilities Compatibility Popular downloads Hardware spec. Software spec. Package contents Processor Quad-core Intel® Celeron® 2.0GHz (up to 2.42GHz) Memory Installed: 4GB DDR3L SDRAM (1 x 4GB) Slots: 2 SODIMM (Max: 8GB) NOTE: 1. When installing two memory modules, please ensure that they are the same size and ideally use the same type of RAM for both memory slots. 2. For the information of RAM module installation and compatible NAS models, please refer to the QNAP RAM Module Installation Guide Flash memory 512MB Internal drive 8 x 3.5" or 2.5" SATA 6Gb/s, SATA 3Gb/s hard drive or SSD NOTE: 1. The system is shipped without HDD. 2. HDD compatibility list Drive tray 8 Hot-swappable and lockable trays Network interface 4 RJ45 Gigabit Ethernet ports Ports 4 USB 3.0 1 HDMI 1 console (system maintenance) LED indicators Status, LAN, USB, HDD 1-8 Buttons Power, reset Alarm buzzer System warning Form factor 2U, rack mountable Dimensions 89(H) x 482(W) x 534(D) mm 3.5(H) x 18.98(W) x 21.02(D) inch Weight Net weight: 11.02 kg (24.29 lbs.) Gross weight: 19.26 kg (42.46 lbs.) Power consumption (W) HDD standby: 43.09W In operation: 98.53W (with 8 x 2TB HDD installed) Sound Level* Sound pressure (LpAm) :36.8 dB(A) Temperature 0-40˚C Humidity 0~95% R.H. Power supply Input: 100-240V AC, 50/60Hz; Output: Redundant 250W Fan 2 x 70mm, 12V DC