yes, talking the HP 3310.. yes, you had posted that already (gee you have a good memory). I knew that it wouldn't read SM cards, we already had that discussion.. it will read SD cards and some others. I could try my "old" Kodak 4in1 reader that's plugged into the computers USB port on the printers USB and see if that works! If it does, will let you know, or if it blows the new printer up, will let you know that too!
Then for the 21 in 1 card reader I bought, guess I'll just get my $20 back.. haven't opened it yet! It does show on the front of the pkg. for use with: CF-type 1, cf-type ii, cf-ultra, microdrive, SD, SD Ultra, SDC, Mini SD, MMC, HS-MMC, RS-MMC, MS, MS(MG), MS-pro, HS-Ms, MS Duo, MS-Pro Duo, HS-MS-Pro Duo, SM, XD, and T-Flash.
There ARE supposed to be "multi media card adapters" somewhere out there in the world! If I find one I'll let you know!