HU with usb port

vibrtor · Post by **vibrtor** » Wed May 14, 2008 5:05 am

I've been researching aftermarket HU's with front usb port and am finding that the manufacturer states that you should not start the vehicle with the flash drive installed.This means you have to take it out and reinsert it each time you start the car. This seems totally illogical to me. It's like having to remove a cd every time you want to start the car. It follows that it's then going to start at the beginning of the cd/flash drive every time you reinsert it. I'd appreciate feedback on this. Does this concept seem as ridiculous to you as it does to me?

northvibe · Post by **northvibe** » Wed May 14, 2008 5:11 am

i can see this if the HU can use the usb for updating firmware, so if something is plugged in it may search that device to boot from it to update. If something stays plugged in on boot aka car starting and there is no "firmware" update, it could just take a while longer to load the HU OS because its caught searching the usb drive.

Truckin1999 · Post by **Truckin1999** » Wed May 14, 2008 6:29 am

My wifes laptop won't boot up with something plugged into the USB port. Its pretty lame!

northvibe · Post by **northvibe** » Wed May 14, 2008 6:52 am

change the bios boot settings.

Raivis · Post by **Raivis** » Wed May 14, 2008 10:08 am

usb port must be different the sd slot. my wifes van always has a sd card in it and never had any problems.

vibrtor · Post by **vibrtor** » Wed May 14, 2008 10:38 am

JVC customer support said starting the car with the flash drive installed may destroy the data (via a voltage spike(?)). I would think, as long as the HU source is not set on USB, there wouldn't be a problem. I never had a problem with my desktop or laptop when the usb port was turned off via "disable removable hardware". The owners manual for Clarion and Panasonic say the same as JVC. So, I suspect it must be a universal requirement for any HU with a usb port.Does anyone out there have one with a usb port? Do you remove the flash drive each time you start your vehicle?

kunkstyle · Post by **kunkstyle** » Wed May 14, 2008 1:57 pm

I don't remove mine, haven't had a problem. It's not set to usb when i start the car though.

vibrtor · Post by **vibrtor** » Thu May 15, 2008 2:45 am

That's what I was hoping to hear. I figured, as long as the radio isn't set to USB when it's started, there's no problem.

briantforce · Post by **briantforce** » Sun May 18, 2008 12:23 am

Quote, originally posted by Truckin1999 Â»My wifes laptop won't boot up with something plugged into the USB port. Its pretty lame!if you enter the bios or setup menu on startup (most likely hold f12, but look for the option on startup), just go to boot devices and change the order so it checks the internal harddrive before the usb slots

kunkstyle · Post by **kunkstyle** » Sun May 18, 2008 3:47 am

Quote, originally posted by briantforce Â»if you enter the bios or setup menu on startup (most likely hold f12, but look for the option on startup)Or 'delete'. I find Gateways usually use del for bios settings. Don't know if others do.

HU with usb port

HU with usb port

Re: HU with usb port (vibrtor)

Re: HU with usb port (vibrtor)

Re: HU with usb port (kunkstyle)

Re: (Truckin1999)

Re: (briantforce)