Hello, Whip!
After double-checking, we do not have any of these for purchase. However, any standard Laptop RAM card should be fine - providing it's the correct size.
On page 46 of the VXI-MXI-2 User Manual, it specifies the following for selecting the DRAM you will use:
"The VXI-MXI-2 can accommodate up to two 1.35 in. DRAM SIMMs.
Table 3-1 lists the SIMMS you can use. You can use 32-bit or 36-bit
SIMMS since DRAM parity is not required. Because the VXI-MXI-2
supports only one organization at a time, all SIMMs installed must be
of the same type. Use Bank 0 first when installing the SIMMs. This
allows you to install up to 64 MB. The VXI-MXI-2 supports DRAM
speeds of 80 ns or faster."
These should be available from a standard online electronics supplier,
Please let us know if you have any further questions on this, Whip!
Will Hilzinger | Switch Product Support Engineer | National Instruments