Details roduct code RB921GS-5HPacD-15S CPU nominal frequency 720 MHz CPU core count 1 Size of RAM 128 MB 10/100/1000 Ethernet ports 1 Wireless standards 802.11a/n/ac Wireless chip model QCA9882 Power Jack 1 Supported input voltage 9 V - 30 V PoE in Yes Voltage Monitor Yes PCB temperature monitor Yes Dimensions 140 x 348 x 82 mm Operating System RouterOS Operating temperature range -30 + 70 C License level 4 Antenna gain DBI 15 CPU QCA9557 Max Power consumption 13W SFP ports 1 Number of chains 2 Storage type NAND Storage size 128 MB