Jason, Missed the boat completely, Go to the http://members.aol.com/mcapage0/mcaindex.htm and follow the links for that L40 memory hacking. It says: "Selfmade memory modules for L40, TP350 and TP710T." You can use the standard true parity 70ns or faster and have someone setup the jumper pads as shown or you have the required soldering skills and stuff to pull that off. I had to do that for my compaq 4/33i, nec 386/33i and ibm motherboard. Every one worked on those pair of generic true parity simms I had resetted the jumpers to proper settings as shown. That pair of simms I gotten was generic standard parity 70ns 4MB with incorrect jumper setup on them! Cost? under $50 new for two. Jason D.