Allison wrote: Note, Sorry for so wordy.. No idea where to be tense fearing leaving too much info out. augh! Ah, dropping into lecture mode... In that time when you knew about it, 33mhz was "THE top of the line" and digs up lot of $ from your moth-eaten pockets so you did not hear much about it but also some people knows about 33mhz but $$$ and Amd was busily cloning the 386 and was successful. Intel responded with massive cutting then short time later killed the 386 and made people buy up all those 486dx and 486sx. That leaves Amd's market to keep selling those 386 because they're still powerful enough and and they're dirt cheap at that point. 386 is a must in that past when running that dreadful and still is, windoze stuff. I had the uncached 386dx 25 (yuk) in '91, then had cached Am386dx 40 1 year later. Finally had my hands on that famed Am486-40 in '94 at aching $350 because of Intel's cost. Longest span since that until early '96 got the P word 100 also is breaking my record of owning that longest second to my 386sx laptop (still have it 4 years). Sorry to say, and now look what Intel is trying to dig Pentiums into dirt again while all kinds of 386 even gasp (!) 286 owners upgrading to P5 not PPro or P5II because they're priced RIGHT. Even highest end with 64mb ram option, 4gb, 200(h)mmx, and everything else barely breaks 2k CDN range and that includes monitor and Asus mobo, few s/w. Average upgrade cost is between 300 to 500. What? Ok, enough of this hubbub of some info and my past ends... I did dealt with oldie machines as well. That includes the TRS80, and the rare ones I usually see is Osborne of any types. So far saw 3. And had the dead Kapro 2k portable. It was beyond my ablities to save it when previous owner munged it up so bad. Sawen up parts of plastic parts, missing parts etc..but love to find another one again if it's affordable. :) Note that I tried to run it with external PSU at correct voltage, the display is FAINT! then finally one tranny cracked in two with a snap n stink. Sigh too much to deal with it so it's stripped of needed parts. :( Yes, it is true that Intel officically says so to protect that now famed low end part of 486 from being passed on in those oh old days...sensiable Intel indeed. But little known CPU set (yup it's a set!) is RapidCad and it's from Intel officially rated 33mhz but works well at 40mhz. What so, I have this set as well and what I know is pays to put the heatsink on that RapidCad 1 chip and leave the smaller one called RapidCad 2 bare. Large snip! Troll (this is my nickname of Jason D.) PS when I had problems I had to call to have RapidCad set replaced, their tech support gave me a BIG runround before they get me to correct dept to process properly. Not very easy and not fun especially when one is deaf like I am. The automated system speaks fast, relay operators that I work with could'nt keep up and get stuffed into "musical holds for live personnels" YUK! As a techie guy, I seen this often when calling for components ordering or assistance. But Web is very good "USUALLY"! And I still Kick Compaq for not releasing their much needed info I need even I offered to sign nda form! Any suggestions byond this? Info I need for those compaq SLT 386s/20 memory board module pinout and couple of resistors (smoked and no twin unit to refer to) in that SLT model no 2687 PS brick.