Features: 1.This portable 4G network card is the first choice for notebook computer applications 2.Can be widely used in gateways, industrial monitoring, telemedicine and other fields 3.This wireless 4G WIFI module is small in size, light in weight, compact and durable, and easy to carry 4.Portable design makes the use of this wireless 4G module more convenient, easy to carry 5.L850-GL module uses M.2 port, supports LTE FDD / LTE TDD / WCDMA, etc., very practical specification:Item Type: 4G Module How to Use: 1. Use a small screwdriver to open the back cover of the laptop, and find the wireless network card (the wireless network card is a square, and there are two black and white wires connected. There are two small screws to fix) 2. Unscrew the two fixed screws with a screwdriver, put them aside, and keep them 3. Remove the old wireless network card and replace it with a new one, return to the installation according to the original disassembled route, and fix it 4. Then boot up and install the driver automatically (the driver can be matched by the supplier according to the customer's computer model) Model: L850-GL SPS: L15398-001 Description: LTE/WCDMA cellular module with global certification General Parameters: Wireless Technology: LTE FDD, LTE TDD, WCDMA Region: Global LTE / 4G Band: LTE FDD-B1 / B2 / B3 / B4 / B5 / B7 / B8 / B11 / B12 / B13 / B17 / B18 / B19 / B20 / B21 / B26 / B30, B66, LTE TDD-B38 / B39 / B40 / B41 UMTS / HSPA / 3G / WCDMA Frequency Band: B1 / B2 / B4 / B5 / B8 Packing: M.2 Interface: USB2.0, USB 3.0, PCIe (for Windows 10), USIM Data Rate Download Link: 385 Kbps (UMTS), 347 MbpS (LTE TDD), 450 Mbps (LTE FDD) Data Transmission Rate: 385 KbpS (UMTS), 30 MbpS (LTE TDD), 50 MbpS (LTE FDD) Size: Approx. 30 x 42 x 2.3mm / 1.2 x 1.7 x 0.1in Working Temperature: -20 to 65 PackageList:1 x 4G Module