OSTENT UMTS/HSPA+/LTE 4G Modem Pool 16 Ports for Quectel EC21-E Module

About this item 16 ports industrial-grade modem pool Based on EC21-E module for Quectel USB port Interface Control via AT commands Support FDD LTE: B1/B3/B5/B7/B8/B20 (800/850/900/1800/2100/2600), WCDMA: B1/B5/B8 (850/900/2100), GSM: 900/1800