Track pad not working

So your problem is that you can't connect the flash drive and mouse receiver at the same time, because the flash drive body is too wide? If it is, that's a pretty common problem.

I'd recommend using a USB hub. It would also help for the times where you need to connect more than 2 USB devices. Possibly one with wires or some arrangement that doesn't place the ports close to each other. Some hubs have their ports spaced really close to each other, but if it's 3 or 4 ports then you should have no problem connecting two devices even if both are really wide. I connect both my wireless mouse receiver and a USB flash drive at the same time to a hub, which leaves my remaining MBP port for a high current device. There are also "Medusa" hubs or ones that lay out the ports in different directions. I like this one:

https://www.bedbathandbeyond.com/store/product/kikkerland-reg-usb-hubdog/1018149 109

Alternately you could use a USB extension cable to connect the flash drive.

Ralph ..

Even though it's out of warranty it might be worth getting the trackpad repaired > Mac Service Answer Center - Apple Support

Carolyn Samit wrote:

Even though it's out of warranty it might be worth getting the trackpad repaired > Mac Service Answer Center - Apple Support

However, Apple wont service a device that old.

ralphsaperstein wrote:

Thanks, I found a repair shop that is going to replace the track pad

Unfortunately, neither Apple nor their network of authorized service providers will do it given how old your machine is. However, there are plenty of shops that can do that repair with salvage parts.

I’d still recommend a USB hub. They can come in handy. I specifically have certain types to deal with the width of USB flash drives.