** Note: You need a OTG cable with a power connector & ROOT
Nexus 4 - Stock ROM 4.3 ROOTED
OTG cable with power connector
An earlier version of Directory Opus (sorry, the trial expired and I did not note the exact version) seemed to do a good job of transferring files from the Nexus to the PC (Win 7), but when I tried it on another computer and it no longer worked (transfer stopped before it actually completed).
I tried the following and it worked for me:
Check these links:
Use the patch that is suitable for your rom.
install StickMount, connect the usb otg cable to portable drive (in my case a seagate 320 GB Freeagent), the power, and then the phone.
The drive is mounted under /sdcard/usbstorage/sd1
You may need the ntfs-3g file from Chainfire's site.
Transfers were at 7 to 8 MBps from the Nexus to the portable drive [NO PC/Windows involved]. This is better than MTP and DirectoryOpus [when it worked] which was at around 4MBps.
The other option is to use SuperBeam app.
DirectoryOpus might work, but you probably need the right combination of MTP drivers, DirectoryOpus version and Windows version.