DELL 555-BBZZ, Internal, Wired, Mini PCI Express, WLAN, 270 Mbit/s, Green DELL 555-BBZZ. Internal. Connectivity technology: Wired, Host interface: Mini PCI Express, Interface: WLAN. Maximum data transfer rate: 270 Mbit/s, Top Wi-Fi standard: Wi-Fi 4 (802.11n), Wi-Fi band: Single-band (2.4 GHz). Product colour: Green