The device uses a high speed 720MHz CPU and has a built in 802.11 ac/a/n wireless device with up to 31dBm output power.

Comes with: 

Gigabit PoE injector, 24V 0.8A power adapter, Metal ring, K-41 screw kit

Product specifications

• Product code : RB921GS-5HPacD-15S
• CPU : Single core QCA9557 720 MHz
• Size of RAM : 128 MB DDR2 300Mhz
• Data storage :
• 10/100/1000 Ethernet ports : 1
• SFP cage : 1
• Wireless : Built-in 5 GHz 802.11ac, dual-chain
• PCB temperature monitor : Yes
• Voltage monitor : Yes
• Power input : jack: 8-30 V DC, PoE in: 8-30 V DC
• Power consumption : 13 W
• LEDs : 8
• Beeper : Yes
• Operating system : MikroTik RouterOS, Level 4 license
• Antenna gain : 15 dbi
• Frequency range : 5.17 - 5.825 GHz
• Polarization : Vertical and horizontal
• 3dB Beamwidth - azimuth : 120 deg
• 3dB Beamwidth - elevation : 10 deg
• VSWR : 1.43 typ, 1.8 max
• Port to Port isolation : >40 dB min
• Front-to-Back ratio : >30 dB
• Cross Polarization : >30 dB
• Weight : Package: 1.35 Kg Unit: 816g
• Dimensions : 140 x 348 x 82 mm