When people refer to the sd card on this device they're talking about the virtual sd card (internal storage). You can connect it to the PC in a couple of ways:
-Connect via a usb cable while booted into Android, if you're on a Jellybean Sense ROM it should show up as a removable drive in Windows automatically. If you're on an ICS Sense ROM you'll need to select disc drive from the notification menu that pops up when you connect. If you're on an aosp ROM you'll need to select the same thing from the notification menu.
-The other way is to boot into TWRP recovery, connect via usb cable, select Mount from the TWRP home screen, then select Mount USB Storage. Now it should show up as a removable drive in Windows.
Sent from my Evita
OnePlus One | CM11S | TWRP 188.8.131.52
Do not PM me asking for assistance, that's what my Q&A thread is for!