TP-LINK 54Mbps Wireless PCI Adapter. Connectivity technology: Wireless, Host interface: PCI, Interface: 32-bit PCI. Data transfer rate (max): 54 Mbit/s. Chipset: Realtek, Frequency band: 2.4 GHz. Antenna connector type: RP-SMA, Gain: 2 dBi. Certification: CE, FCC