The detail of IC card readerspecification: Specification Power requirements+24VDC +/- 5% ConsumptionTypical 350mA Max. 600mA plus for each writing track Power supplyExternal switching power 24V/2.5A CommunicationStandard RS232 or USB with USB-to-RS232 Ripple50mVp-p or less Read cardTrack1 Track2 Track3 Bit per density210 bpi 75/210bpi 210 bpi Coercive forceRead/write 300-4000 OE Mag. card Card thickness0.76-1.2mm Read speedSTD card Jitter +/-15% Amp. 60% 5-55ips 5-50ips 5-50ips Write speed5-30ips Write jitterInterval < +/- 10%, Sub-interval < +/- 12% Error rateRead < 0.5% Write < 0.8% Head life Min. 1000K swipes for both read/write head Features Reading/Writing magnetic stripe card complied with ISO formats Read/Write High & Low Coercive (300 4000Oe) High/Low Coactivity encoding circuitry selectable on screen Program software for Windows 98/Me/XP Programming software for various read/write performance Sequential write function, up to 12 digits (1 up) Manual Swipe to read and/or write card with RS-232 /USB output Writing and verifying data on single, dual, or triple track in one swipe +24VDC, 2.5A Max external power adapter attached Dimensions of 210(L) x 60(W) x 62(H) mm