Features: Brand new and high quality Delicate and compact. Used for GPD Win Max 2 laptop. After purchase, you need to manually install it on your GPD Win Max 2 laptop to upgrade your WIFI GPD Win Max 2 to 4G. With this 4G module , you can use WIFI and 4G. Pay attention to your local 4G frequency band before purchasing. Specifications: Mterial: Metal + ABS Supported frequency band: LTE-FDD: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B28 LTE-TDD: B38/B39/B40/B41 UMTS: B1/B2/B4/B5/B6/B8/B9 GSM: B2/B3/B5/B8 Size : approx. 5x3x0.3cm/1.97x1.18x0.12in Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x 4G Module for GPD Win Max 2