I have a very old Pentium 3 with a cheap 4 port USB hub that I plug my scanner, printer, external harddrive, and camera or flash drives into and everything works perfect. USB1 may be a little slow with large external drives loaded with data, but the speed is bearable.

Update: I bought a new cable at Radio Shack. Went to download the driver, found out that NOOOO!!! HP did NOT have the drivers available, for ANY recent Windows systems. Come to find out, the page that was set up with links for downloading the applications was bogus, when you clicked on the link, you got a whole page of information, but bottom line, the drivers weren't available for downloading and hadn't been since 2009. This INFURIATES me!! My Laserject 5L is completely useless now. And no, I don't want to mess around on E-bay trying to find and install this or that for my old laptop. I can't even get the printer to work with the old laptop which has a prong cable connection. The print job goes to the printer, the printer turns on but never prints. Eventually I get an error message. So I don't know what the problem is. I have uninstalled and reinstalled the driver from the computer over and over again, so maybe there is something wrong internally with the printer. My PC guy told me I could get a pretty good laser printer for 100 bucks, and when all's said and done I would probaby have to spend over 100 bucks messing around trying to fix the old system, with possibly no good results anyway, so I'm giving up on my old 5L friend. I am NOT very happy about it!! :(

USB ports can go out, or the part of the motherboard that supports the ports can malfunction. You could also have a loose connection, depending on how this was built. It's a little strange that they are intermittent in that they work and then immediately go out. The only suggestion I can give you -- other than taking it back to where it was built -- is to shut down the computer, and then unplug it for a half hour; then plug it back in and boot up. Sometimes this fixes a malfunctioning USB port.

My gut reaction is that Verizon was too lazy or cheap to write the drivers for their product. As I read it, the Multi-WWAN driver is for devices that have wireless broadband hardware built-in. I'd download the HP Multi-WWAN driver for a similar mini (make sure you get the matching O/S). Either the driver is going to install or it's going to balk at the lack of necessary hardware. I'd bet that even if it balks, the drivers get installed anyway. If that doesn't work, I'd call Verizon and ask them to support their product. You're paid them for the device and continue to pay them for monthly access. HP Mini's are quite popular so you can't be the only person having this problem.