I just confirmed that Trim can in fact be enabled on these drives.
I have Lenovo 128gig Samsung SSD VBM1EL1Q
go here:
http://forum.notebookreview.com/alienware/444979-alienware-owners-samsung-pm800-ssd-trim-now-availab...
Get the .rar that "contains everthing we need to enable trim" uncompress and put it on a bootable usb.
Backup your drive, everything must be erased. Use a partition backup routine so you can just restore it. (I used Windows 7 backup)
Go into bios and change your SATA setting from "AHCI" to "compatible". Remove the SSD. Boot from your USB. (Hit F12 on startup, select to boot from USB drive)
***
One additional step to verify, optional, but would recommend it...
Boot to your USB drive with the SSD still plugged in. Run maindiag.exe to verify that it sees your SSD in this configuration. It will populate the make/serial/firmware fields with the Lenovo info, just reassuring you that it is seeing the correct drive and setup correctly to flash. Then shut down, pull the SSD out and continue below. Do not try to flash it with the model/serial/firmware numbers showing, see note below *****
When you get the C:\ prompt, insert your SSD drive into you laptop (hot plug it in).
<-- Important, if you boot with the SSD in, maindiag.exe will detect it as Lenovo and will only half flash it, don't go there, recoverable but ugly. If you hotplug it in after boot to c:\ , maindiag.exe will not display the drive version numbers (lines will have no values) just run flash sequence below and it will work and report successful. If you want to verify the drive it is seeing, do the optional step above.
Run maindiag.exe select number 2, then number 1, then number 4. <--Important that you do all three steps, in this order.
You will see a "Success" message after each step.
Reinsert hard drive, reboot, change bios setting back to ahci, reboot, restore image from backup from whatever boot media you created during backup process. (Again, I used Windows Backup and Windows 7 Installer --> choose recovery and selected my backup file.)
Run Crystal Disk info to reveal you have now enabled TRIM,(AAM) Acoustics Management, (NCQ)Native Command Queuing.
Windows experience went from 5.9 to 7.2 and your firmware is now VBM19C1Q