Check the listing for details. Advanced Electronic Applications AEA CP-1 Computer Patch Interface POWERS ON. Condition: Used. Listed at 38.00 USD. This unit is in decent condition considering its age. I was able to successfully power it on with a power adapter I had on hand (not included). All front panel controls are mechanically sound. Please be aware that no power adapter or connection cables are included. Please note that you will only receive what's shown in the pictures (if you have any questions about this, please ask before purchasing). Lastly, your order will ship no later than three business days after payment has been received. I do my best to ship as soon as I am able, but this is not my full-time job and my schedule is very busy with other obligations. Thank you in advance for your patience and understanding!