Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Can I connect this(with an SD card) to the PC via USB and have the contents accessed on my iPad at the same time?
Document: This is so much more than just a charger for cell phones. If your device has limited storage the Mobilelite fits the bill. Simply insert an inexpensive SD card, connect to your device, launch the Mobilelite app and view photos, movies or documents just to name a few. I have both an iPad & Android phone and it works great with both, even at the same time. I store PowerPoint presentations on it and use my iPad to view.
I purchased this over an iUSB adapter that sells for about $40 more. And this has more features! You connect up to 3 devices to this via wifi. I connected an iPhone5, iPad 2nd Gen, and Samsung Note 8 to it at the same time.
This wireless flash reader is exactly what I was looking for. It is very simple to use--it transmits its own wi-fi signal, which you can encrypt with a password if you wish, and connects quickly and easily to your iPad (after you download the Mobilelite app from the iTunes App store--free). You can insert an SD memory card (or micro SD card using the supplied adapter) or use a USB flash drive or connect an external USB card reader.
I have even tried a USB hard drive and the Mobilelite will see that as well (Beware: MobileLite has a hard time with directories on a hard drive, so this is not a recommended use). Using flash drives and SD cards this gadget works fine.You cannot access the MobileLite device from a PC, or at least as far as I have tried this. As I stated earlier, Kingston only intended that as a flash memory reader for an Android or IOS device and Not an NAS.
I'm impressed that it's able to power a 1 Tb Seagate Backup Plus USB 3.0 and transfer files. The iPad can't display RAW files, but the MOV and JPG files are no problem. Transferring a large number of files can be a bit tedious though, because the app makes you select files one at a time, although the transfer is done by batch.It also works great to stream movies from the hard drive to my iPad via WiFi. The movies display well and show no signs of hiccups.
As such it leaves the consumer the freedom to use existing memory cards/usb drives, with the SD card slot especially useful for inserting the card from your digital camera and sharing photos via your mobile device without the need to carry with you a laptop...To get going you simply download the app, go to the wireless settings of your mobile device and connect to the WiFi network the MobileLite is creating when turned on, and that's it.
I have a few photos on it too, but where it really shines is with videos. A major movie takes up slightly less than 1GB, so on a $30 32GB SD I can store 32 movies (about 45 hours worth.) Up to 3 people can connect to it at the same time so kids can watch a cartoon while you watch something more mature. Need more storage, simply remove the SD card and insert a different one.
The MobileLite app on the iPad would no longer see the SD card contents. Frustrating, but at least I was able to copy files from the SD card to the MobileLite app's offline storage when I was fortunate enough to have the reader see the SD card contents. Still, I was so annoyed by this device that I put it in a sock drawer for a few months. What a waste of 100 bucks.A few months later, I decided to try it again today.
Great, I thought, the kinks are worked out now. No such luck. Now I'm not able to simply copy a file from the SD card to the offline area in MobileLite app running on my iPad. I keep getting an error- the file I am trying to copy is 1.29 MB- hardly a taxing feat. The files on the SD card only sporadically come up in the MobileLite app even though my iPad is connected to the reader via wifi just fine, seemingly.
I was not able to view RAW NEF photos from the flash drive but could view JPEGs, without transferring the photos to the iPad, and could easily and quickly scroll through photos with a swipe of my finger. I was able to put my camera compact flash card into an (unpowered) external USB card reader, connect it by a USB cable to the Mobilelite device and wirelessly view the JPEG photos (but not RAW photos) on the iPad. It is light weight--3.5oz.
Answer: I just verified this before replying to make sure I give you the right information. Unfortunately you cannot access from a mobile device if it is plugged into your PC. In order to have your PC recognize it, the device must be turned off. If you turn it on after you plug it in, it is no longer read by the PC. If you gave it on and then plug it into the PC, then it looks at the PC as a power source. Hope this helps.