I am experiencing difficulty in downloading my camera shots via any of the two USB ports, using either SD/MMC/RC USB 2.0 or Lexar USB 3.0 reader. Both used to work. Either do not show up on my Utilities scren either. Please advise.
MacBook Pro, Mac OS X (10.7.5)
What do you mean by "Utilities" in "do not show up on my Utilities screen either"?
What is "SD/MMC/RC USB 2.0"?
Do you still have 10.7.5?
- Does it show in Disk Utility?
- Does it show in System Profiler under USB? You should see the chipset in the card reader as well as the SD card itself
OS X: About System Information and System Profiler - Apple Support
https://support.apple.com/en-us/HT203001
- Try resetting the SMC and NVRAM/PRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
https://support.apple.com/en-us/HT201295
About NVRAM and PRAM
My MacBookPro does not recognize any usb connection
