This is from rns510 3.4 yr 2007
Requirements for the memory card
The memory card slot accepts memory cards
with a size of32 mm x 24 mm x 2.1 mm or
1.4 mm.
The unit can read SO memory cards ("Secure
Digital Memory Cards") and MMC memory
cards ("Multimedia Cards") with a capacity of up
t02GB.
Other memory cards that fit the slot physically,
such as SOHC cards ("Secure Digital High-Capacity
Memory Cards")' cannol be read . ...