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I have a classroom set up MacBooks. They are the 2.4 GHz Intel Core 2 Duo with 2 GB 667 MHz DDR2 SDRAM.
I use science probes manufactured by PASCO. The probes are motion detectors that are hooked up to the USB port and draw their power from the USB port. These probes work perfectly on the Mac G4 laptops. They do not, however, work on the new MacBooks unless we get out the MacBook power supplies and plug the laptops in.
Does anyone have any advice on how to fix this situation. There are simply not enough outlets available to efficiently run this activity without laptops that will power the probes while running on battery power only.
I sent a note to PASCO and they replied:
"Thank you for contacting PASCO Teacher Support. Our PASPort sensors are considered "high-power" USB devices and will only work on USB ports that can supply sufficient current. (The motion sensor requires 28 mA of peak power and link requires 2-10 mA.) It appears that the left port on the new Mac books supplies less power than the units on the right port, so I suggest switching USB ports and contacting Apple about the issue. "
I use science probes manufactured by PASCO. The probes are motion detectors that are hooked up to the USB port and draw their power from the USB port. These probes work perfectly on the Mac G4 laptops. They do not, however, work on the new MacBooks unless we get out the MacBook power supplies and plug the laptops in.
Does anyone have any advice on how to fix this situation. There are simply not enough outlets available to efficiently run this activity without laptops that will power the probes while running on battery power only.
I sent a note to PASCO and they replied:
"Thank you for contacting PASCO Teacher Support. Our PASPort sensors are considered "high-power" USB devices and will only work on USB ports that can supply sufficient current. (The motion sensor requires 28 mA of peak power and link requires 2-10 mA.) It appears that the left port on the new Mac books supplies less power than the units on the right port, so I suggest switching USB ports and contacting Apple about the issue. "