Topaz SignatureGem LCD 4x3 with MSR TM-LBK755 Series USB Backlit TM-LBK755-HSB-R Signature Capture Pad, Non-Cancelable, Non-Returnable Part Number: TM-LBK755-HSB-R Interfaces: USB with MSR (High Speed) Sensor Type: Active Electromagnetic Pen Type: Active Energized Backlit Option: Yes Signing Area Size: 4.4 inches x 2.5 inches Data Conversion Rate: 377 points per second Resolution: 410 Ppi