["Specifications:NetworkingData Link Protocol: 802.11b, 802.11g, 802.11n (draft)Status Indicators: Link/activityConnectivity Technology: WirelessSpread Spectrum Method: OFDM, DSSSFrequency Band: 2.4 GHzUp to 300 Mbps for raw data transfer rateCompliant Standards: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n (draft)Dimensions: 13x12x2cm/5.12x4.72x0.79"Device Type: adapterForm Factor: Plug-in cardInterface (Bus) Type: PCI for Express x1Software / System RequirementsPeripheral / Interface Devices: CD-ROMSystem Requirements Details: 20 MBSoftware Included: Drivers & UtilitiesOS Required: for Windows 2000 SP4 or LaterAdditional Requirements: CD-ROMAerialAntenna: External detachableDirectivity: Omni-directionalExpansion / ConnectivityCompatible Slots: 1 x PCI for Express x1Quantity: 1 SetNote:Please allow 0-3mm error due to manual measurement. pls make sure you do not mind before you bidDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Includes:1 x D-Link DWA-556 Wireless N Adapter (with full height mounting bracket)3 x Detatchable Antennae"]