Product has 3 Modes; data, fax, and TAM (telephone access module). * This USB modem can receive data rates up to 56Kbps and transmit data rates up to 48Kbps. * Size: 3.75" x 2.5" x 1"; Color: Black * Package Contents: 1 x USB 2.0 56k Modem; 1 x USB Adapter; 1 x RJ11 Phone Jack Cable; 1 x Software CD. * HDE® is a registered trademark and is the only authorized seller of HDE branded products