I had lots of flex and finger hooking on my keys with my original keyboard, whic turned out to be a chinese keyboard though not the good one that others report with the so called "rivets" under the keys, My first keyboard looked like the THAI one, that is no distinguishing marks to tell which one it was, until my replacement came and I found the original was a chinese keyboard with no special "rivets" on it. My original keyboard has a sticker on the back that says model number K051125X Sunrex Technology Corp. it is flimsy and the metal has holes stamped where the keys plastic parts hook onto it. dells part number listed on the back of this keyboard is DP/N OH5639.
MY REPLACEMENT keyboard is also made in china, but it is the nice one that people describe as having "rivets" that you can see just under the V B and N keys and a few other keys as well, I asked Dell specifically for this keybaord telling them I had the THAI keyboard and didnt like its flexy keys (thinking that I did in fact have the THAI). The replacement keyboard is model number A196 KFRMB2 Series (this is from the sticker on the back of the keyboard) it is a solid metal back plate which is thicker and has no flex compared to the original. My Dell packing slip for the exchange keyboard refers to the kit as R8690, further down the packing slip it lists a part number for the keyboard as item number N8685 TSH,KYBD,REPL,INSP,9200.
Now this new chinese keyboard with the soo called rivets is great!! just like an IBM keyboard, even when I hit the corner of a key it depressed the entire key evenly an feels much better, it also has more of a reassuring click to it when I strike a key, just like the IBM notebook keyboards that I know and Love.
My 9300 is now perfect, THANKS DELL for the replacement!!
Hope these part numbers and model numbers help others out there who are also having problems, my first keyboard would make the cursor jump and sometimes flip webpages, one time even shutting the computer off, though my fingers never left home rown or the row immediately above and below it, in other words, I never hit any special function keys or anything that should have initiated a shutdown or a cursor jump!! Im pleased to report that with my replacement keyboard I am no longer experiencing that problem!!