Gigabyte N300 Series Mini Pci Express Adapter C Dual-band 802.11 A/b/g/n Draft Product Type - Wireless Adapter Warranty - 1 year Warranty - 1 year Backward compatible with 802.11b/g -- GIGABYTE N300 series conforms to IEEE 802.11b, 802.11g and draft 802.11n specifications. Seamless roaming between 802.11b, 802.11g and 802.11n networks. No compatible trouble.