Specifications
USB: USB 2.0 Full speed, USB 1.1 compatible
 
Power consumption:
   USB – less than 100mA
   Power supply – less than 250mA at 13.8V (max. 16V)
 
CW: 2 x open collector, max 30V/400mA
PTT: 2 x open collector, max 30V/400mA
PTT IN: 2 x active when closed to ground, max +25VDC only
 
ACC: TTL levels - 4mA Max. 
 
LPT port: optically isolated, load less than 1 mA at 5V.  

FSK: 2 x open collector, max 30V/400mA
FOCUS: open collector, max 30V/400mA - low = R1 selected

Foot Switch: active when closed to ground, max load: 1 mA at 5V
Phones: stereo output for headphones, 32 Ohm nominal 
 
MIC: dynamic/electret selectable - max input 500mV
          3dB bandwidth: 200 Hz - 6KHz typical
          selectable 8V bias - 1mA max, off/tip/ring  
 
SC Out: AC coupled input from soundcard - 32-600 Ohm, 4V p-p max.
 
SC In: AC coupled output to soundcard mic - 600 Ohm typ, 500mV P-P
          3dB bandwidth: 200 Hz - 6KHz typical
 
Dimensions: W 232mm (9.125") x H 44mm (1.75") x D 101mm (4.125")
Weight: 1.3 kg (1.875 lbs.)
 
Requirements:
 
Minimum - 1.6 GHz IBM PC compatible computer with Windows 2000, 512 MB RAM, Sound card, CD-ROM, USB1.1 port, Transceiver (x2), logger or control software (any) 
 
Recommended - 1.6 GHz PC with Windows XP or higher, 1 GB RAM, Sound Card, CD-ROM, USB2.0 port, Transceiver with computer port (x2), CW paddle, PS/2 keypad, logger or control software (any)
 
Note:  Windows 98 (all versions) is not supported.