$ 10.11

Cisco AIR-ANT2524DW-R Aironet Dual-Band Dipole Antenna 

Supports 2.4 GHz & 5 GHz Frequencies
50 Ohms Nominal Input Impedance
2.4 GHz Peak Gain: 2 dBi
5 GHz Peak Gain: 4 dBi
Designed for Indoor / Office Use