The WiFi network card has WEP encryption, which can provide online privacy and security for wireless network connections. Characterized by fast transmission rate, stable signal and low latency, this WiFi adapter allows you to enjoy smooth network experience. It is constructed of ABS material. The length of this product is 1.9cm, the width is 1.5cm and the height is 0.6cm. The product is suitable for home, office, business, etc. It supports WEP encryption, supports WPA/WPA2, WPA-PSK/WPA2-PSK, etc. Item Name: Network Card Material: ABS Interface: USB 2.0 Chip: RTL8188 Speed: 150 Mbps Built-in Antenna: Compliant with IEEE802.11b Standard, IEEE 802.11g, IEEE 802.11n Operating System: for Windows 2000/for XP/for Vista/for WIN7/8/for Linux /for Mac OS Features: Fast Transfer Speed, Stable Transmission, Wide Compatibility Size Details: 1.9cm x 1.5cm x 0.6cm/0.75" x 0.59" x 0.24"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 4 x 1 x Network Card