Alesis iO4 Quick Start Guide - Page 5

REAR PANEL FEATURES 19 20 20 21 22 23 25 24 26 19. HEADPHONES - Connect your 1/4" headphones to this output. 20. OUTPUTS - Use standard 1/4" cables to connect these outputs to a mixer, speakers, or an amplifier system. The level of these outputs is controlled by the MAIN VOLUME knob. 21. MIDI OUT - Use a standard five-pin MIDI cable to connect this output to the MIDI IN of an external MIDI device. 22. MIDI IN - Use a standard five-pin MIDI cable to connect this input to the MIDI OUT of an external MIDI device. 23. 16/24 BIT MODE - When the switch is set to 24 bit, you can use inputs 1-2 and outputs 1-2. When the switch is set to 16 bit, you can use channel inputs 1-4 and outputs 1-4. 24. USB PORT - Use the included USB cable to connect the iO4 to a computer. iO4 requires a USB 2.0 connection. Note that the iO4 is not USB bus powered. 25. POWER CONNECTOR - Plug the included AC adapter here (6v DC 1A) 26. POWER SWITCH - Turns the iO4's on/off. SYSTEM REQUIREMENTS Minimum PC Requirements: • Pentium III 450 MHz Processor • 512 MB RAM • Available USB 2.0 Port • Windows XP (with Service Pack 2 installed) Minimum Macintosh Requirements: • Apple computer with native USB 2.0 support • Mac OS X 10.5 or later • 512 MB RAM Recommended PC Requirements: • Pentium 4 or Athlon Processor • 2GB or more RAM • 7,200 RPM Hard Disk Drive • Available USB 2.0 Port • Windows XP, (with Service Pack 2 installed), Vista, 7 Recommended Macintosh Requirements: • Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor • 7,200 RPM Hard Disk Drive • 2GB of memory • OS X v10.6.6 or later 5