... /Q2406/Q24PLS modem pool 4.Dual-frequency 64 ports GSM/GPRS SMS MOMDE Pool with Q2303/Q2403/Q2406/Q24plus modem ... also known as "SMS cat pool" in China, USB 2.0 can be used directly into the computer ... usb port, for laptops, desktops can be used. Break ... the computer through a data line can be integrated with USB 3, Each channel with separate power switch 4, ...