Features: Dual-band wireless wifi 2.4 / 5 GHz: reduce signal interference and make the network smoother. Support 802.11ac/b/g/n technology: network speed up to 1200mbps. Compatible models: Compatible with-almost all laptops with M2-NGFF interfaces for desktop all-in-one machine, mini advertising machine, industrial computer equipment with NGFF- slot can also be used. Widely used Realtek-RTL8822BE main control chip: stable performance and fast-running speed. Specifications: Model:RTL8822BE FRU: 01AX712 Interface:ngff-m2 Size:approx 30mmx23mm/1.18x0.9in Frequency:IIEEE802.11ac/b/g/n Wireless Speed: 867Mbps Bluetooth-compatible: 4.0 It is also compatible with-below lenovo- model laptop: for Thinkpads P51S S5- T470 T570 X270 for YOGA E470 E470C E475 E570 E570C E575 Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurme Package includes: 1Piece x Wireless Network Card