21xx 486SX-25 MHz Level-2 (30 Pin SIMM)
J2 External Battery
CN2 Power
J15 Diskette
J30 Parallel Port
J16 Hard Disk Drive
-- Serial Port A and B
J9 Keyboard
J10 Mouse
J11 PINs 1 and 2 = Power On LED
PINs 4 and 5 = Hard Disk LED
J12 Riser
J13 VESA Video feature connector
J14 Display
SIMM 1 30-Pin Memory SIMM Socket Bank 0,0
SIMM 2 30-Pin Memory SIMM Socket Bank 0,1
SIMM 3 30-Pin Memory SIMM Socket Bank 0,2
SIMM 4 30-Pin Memory SIMM Socket Bank 0,3
SIMM 5 30-Pin Memory SIMM Socket Bank 1,0
SIMM 6 30-Pin Memory SIMM Socket Bank 1,1
SIMM 7 30-Pin Memory SIMM Socket Bank 1,2
SIMM 8 30-Pin Memory SIMM Socket Bank 1,3
JP7 Reset Switch
JP8 Battery Select
JP10 VGA Enable
JP16 PCK Enable
JP61 CPU Select
JP9 CPU Select
JP24 Mouse Enable
JP26 Beeper Enable
U29 Video RAM Socket
U30 Video RAM Socket
U31 Video RAM Socket
U32 Video RAM Socket
U11 486SX Processor
U214 Math Coprocessor Socket
Please see the LEGAL - Trademark notice.
Feel free - send a 
for any BUG on this page found - Thank you.