Instruction: Answer the given question using the supporting document.

Input:
Question: How to open the speaker grill to insert SD card
Document: They are plenty loud (an improvement over my iPad's single lame mono speaker). It also has a hidden SD mini card slot. It's behind the speaker grille. The unit has a micro HDMI out and comes with a wall charger, via micro USB port. An SD card slot for memory expansion and a micro HDMI are huge bonuses for video watchers. Of course bluetooth and wireless.
If I had to go back and repurchase this tablet seeing the screen clarity after the 2 weeks I've had it, I'd buy it again in a heartbeat.The SD card slot seems to trip many people up as well.. I didn't have any issues at all with mine, I just slid the back compartment up, almost like you would the back of a remote. Mine popped right off, but I've heard horror stories about getting the back slot open.
The micro SD card slot is fiendishly hidden behind the rear panel, between the speakers. Removing the panel involves pushing down and up on the speaker slit on each end of the rear panel. Once off, the A2109 will accept a 32GB microSD card.My A2109 found my wireless router with no problem, and established a connection instantly. Bluetooth is a bit of an unfinished work, but this is more due to the Android support for BT changing over to a Broadcom BT stack.
However, thanks to reading the comments on Amazon I found a link to a site that sells it. Also, the instructions don't provide information on how to insert the SD card. Other than that it's a great tablet for the price. I refused to buy a tablet that cost more than my laptop. This Lenovo tablet works just as great as my Lenovo Laptop.
With the auto adjust the tablet still works properly.In summary.....I am GLAD I continued looking at this and would recommend it to anyone with little reservation.It works for me!!! !Footnote:  Installing the SD card.....This is not real hard once you learn the secret. It would seem you could just insert a fingernail or something in the slot and pop the cover off but this will not work. It will just mar the slot.
Get a big Class 10 card and copying videos & music will be dramatically faster.In summary, the A2109 is a solid, well-built tablet with a great battery life. Performance rarely lags, even with lots of apps open. Look around for a sale, because prices swing wildly.
Good performance!Easy access by computerfull support for USB, U disk, mobile hard disk drive and keyboard mouse!Supportive for SD card to expand the memory
I wanted a tablet that would have at least ICS, and an HDMI output, but wouldn't cost more than a computer, which it after all isn't. So far, this is working out great, but where is the SD card slot? I can't seem to find mine and I'm not a newbie. Is it hidden, or do some variations not have one? Over all, this is amazing product!
With the HDMI and micro SD card ports it is more versatile and definitively more upgradeable than my fire and the price where I purchased it from was extremely reasonable as it included a 8 gig micro SD card. Yes the screen viewing angles may not be as good as some they are acceptable for almost everything I do and the color and definition is great.
But this was test, and it was easier just copying to the SD card.The only issues I had with this tablet is it had many useless preloaded apps. Also when you upgrade to JB it downloads some more. It is also hard to find a cover. Amazon just addeda cover: Poetic Slimbook Case for Lenovo IdeaTab A2109. I order 2 to try. Will let you know if they fit.
Answer: This is a feature that Lenovo must have saved money on. Put the tablet face down on a non-scratchy surface with the top edge facing away from you. Notice the small tabs near the speaker openings? Use your thumbs to press the tabs (and the cover!) forward. It may be necessary to work on one side only. Use your fingernails or a suitable flat blade to free each end. Once I got my 32GB micro SD card in, I put the cover back on for good.