How do I access files on an Android device from a LAN connected computer? My connection configuration is, my modem,  connected to a LAN router, connected to several PCs and also connected to a wireless router.  When I use WiFi on my android device, I can access files on the PCs using ES file explorer.  However, I can't access my android device from any of the PCs.  I tried using File Expert, but failed (I suspect it's because it is from LAN PC trying to connect to WiFi).

I also have the same problem if I want to transfer files from my WiFi connected laptop to any of the PCs (in this case I cannot find any of the PC at all from my laptop).  I tried to google a solution but can't find any case which is similar to mine.
It's simple to share Android files to Windows PC. Install ES File Explorer in Android device. Go to Tools and select Remote Manager then you can see turn on. Press on it. And you will get an address like ftp://192.168.1.24:3721/ enter it on your PC file explorer and you can access to your Android phone from PC.

You can change settings of remote manager to get SD card and phone memory.