Hamlet HNW300CI. Connectivity technology: Wireless, Host interface: PCI. Data transfer rate (max): 300 Mbit/s. Modulation: 16-QAM, DQPSK, QPSK, Frequency band: 2.4 - 2.484 GHz. Gain: 2 dBi. Compatible operating systems: Windows 2000/XP/Vista